Last few days I have been working to compile a question and answer set for PHP-MySQL interview questions. There are roughly 150 questions and i will be adding more as days to come. These questions and answers are compiled from different online resources. I am planning to make it a PDF version so that people download it and go through it offline. I hope i will be able to finish it soon.
NB: If you want to add any question, please add it to the comments section. I want to make it a big repository.
Here is the first set of 80 Questions and answer.
Q:1 | What are the differences between Get and post methods in form submitting. give the case where we can use get and we can use post methods? |
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A:1 |
When to use GET or POSTThe HTML 2.0 specification says, in section Form –>If the processing of a form is idempotent How the form data is transmitted?quotation from the HTML 4.0 specification –> If the method is “get” – -, the user agent Quote from CGI FAQFirstly, the the HTTP protocol specifies This is a theoretical point which is also good GET is (in theory) the preferred method for I would prefer POST when I don’t want the status to |
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Q:2 | Who is the father of PHP and explain the changes in PHP versions? |
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A:2 | Rasmus Lerdorf is known as the father of PHP.PHP/FI 2.0 is an early and no longer supported version of PHP. PHP 3 is the successor to PHP/FI 2.0 and is a lot nicer. PHP 4 is the current generation of PHP, which uses the Zend engine under the hood. PHP 5 uses Zend engine 2 which, among other things, offers many additionalOOP features |
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Q:3 | How can we submit a form without a submit button? | ||||||||||||||||||||
A:3 | The main idea behind this is to use Java script submit() function in order to submit the form without explicitly clicking any submit button. You can attach the document.formname.submit() method to onclick, onchange events of different inputs and perform the form submission. you can even built a timer function where you can automatically submit the form after xx seconds once the loading is done (can be seen in online test sites). |
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Q:4 | In how many ways we can retrieve the data in the result set of MySQL using PHP? |
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A:4 | You can do it by 4 Ways1. mysql_fetch_row. 2. mysql_fetch_array 3. mysql_fetch_object 4. mysql_fetch_assoc |
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Q:5 | What is the difference between mysql_fetch_object and mysql_fetch_array? |
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A:5 | mysql_fetch_object() is similar tomysql_fetch_array(), with one difference – an object is returned, instead of an array. Indirectly, that means that you can only access the data by the field names, and not by their offsets (numbers are illegal property names). |
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Q:6 | What is the difference between $message and $$message? | ||||||||||||||||||||
A:6 | It is a classic example of PHP’s variable variables. take the following example.$message = “Mizan”;$$message = “is a moderator of PHPXperts.”;$message is a simple PHP variable that we are used to. But the $$message is not a very familiar face. It creates a variable name $mizan with the value “is a moderator of PHPXperts.” assigned. break it like this${$message} => $mizanSometimes it is convenient to be able to have variable variable names. That is, a variable name which can be set and used dynamically. |
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Q:7 | How can we extract string ‘abc.com ‘ from a string ‘http://info@abc.com’ using regular expression of PHP? |
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A:7 | preg_match(“/^http:\/\/.+@(.+)$/”,’http://info@abc.com’,$found); echo $found[1]; |
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Q:8 | How can we create a database using PHP and MySQL? | ||||||||||||||||||||
A:8 | We can create MySQL database with the use of mysql_create_db(“Database Name”) |
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Q:9 | What are the differences between require and include, include_once and require_once? |
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A:9 |
The include() statement includes The include_once() require_once() |
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Q:10 | Can we use include (”abc.PHP”) two times in a PHP page “makeit.PHP”? |
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A:10 | Yes we can use include() more than one time in any page though it is not a very good practice. |
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Q:11 | What are the different tables present in MySQL, which type of table is generated when we are creating a table in the following syntax: create table employee (eno int(2),ename varchar(10)) ? |
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A:11 | Total 5 types of tables we can create 1. MyISAM 2. Heap 3. Merge 4. INNO DB 5. ISAM MyISAM is the default storage engine as of MySQL 3.23 and as a result if we do not specify the table name explicitly it will be assigned to the default engine. |
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Q:12 | Functions in IMAP, POP3 AND LDAP? | ||||||||||||||||||||
A:12 | You can find these specific information in PHP Manual. | ||||||||||||||||||||
Q:13 | How can I execute a PHP script using command line? | ||||||||||||||||||||
A:13 | As of version 4.3.0, PHP supports a new SAPI type (Server Application Programming Interface) named CLI which means Command Line Interface. Just run the PHP CLI (Command Line Interface) program and provide the PHP script file name as the command line argument. For example, “php myScript.php”, assuming “php” is the command to invoke the CLI program. Be aware that if your PHP script was written for the Web CGI interface, it may not execute properly in command line environment. |
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Q:14 | Suppose your Zend engine supports the mode <? ?> Then how can u configure your PHP Zend engine to support <?PHP ?> mode ? |
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A:14 | In php.ini file: set short_open_tag=on to make PHP support |
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Q:15 | Shopping cart online validation i.e. how can we configure Paypal, etc.? |
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A:15 | We can find the detail documentation about different paypal integration process at the following site
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Q:16 | What is meant by nl2br()? | ||||||||||||||||||||
A:16 | Inserts HTML line breaks (<BR />) before all newlines in a string string nl2br (string); Returns string with ” inserted before all newlines. For example: echo nl2br(“god bless\n you”) will output “god bless <br /> you” to your browser. |
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Q:17 | Draw the architecture of Zend engine? | ||||||||||||||||||||
A:17 | The Zend Engine is the internal compiler and runtime engine used by PHP4. Developed by Zeev Suraski and Andi Gutmans, the Zend Engine is an abbreviation of their names. In the early days of PHP4, it worked as follows: The PHP script was loaded by the Zend Engine and compiled into Zend opcode. Opcodes, short for operation codes, are low level binary instructions. Then the opcode was executed and the HTML generated sent to the client. The opcode was flushed from memory after execution.Today, there are a multitude of products and techniques to help you speed up this process. In the following diagram, we show the how modern PHP scripts work; all the shaded boxes are optional. PHP Scripts are loaded into memory and compiled into Zend opcodes. |
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Q:18 | What are the current versions of apache, PHP, and MySQL? | ||||||||||||||||||||
A:18 | As of February, 2007 the current versions arePHP: php5.2.1 MySQL: MySQL 5.2 Apache: Apache 2.2.4Note: visit www.php.net, http://dev.mysql.com/downloads/mysql/, www.apache.org to get current versions. |
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Q:19 | What are the reasons for selecting lamp (Linux, apache, MySQL, PHP) instead of combination of other software programs, servers and operating systems? |
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A:19 | All of those are open source resource. Security of Linux is very very more than windows. Apache is a better server that IIS both in functionality and security. MySQL is world most popular open source database. PHP is more faster that asp or any other scripting language. |
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Q:20 | How can we encrypt and decrypt a data present in a MySQL table using MySQL? |
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A:20 | AES_ENCRYPT () and AES_DECRYPT () | ||||||||||||||||||||
Q:21 | How can we encrypt the username and password using PHP? | ||||||||||||||||||||
A:21 | The functions in this section perform encryption and decryption, and compression and uncompression:
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Q:22 | What are the features and advantages of object-oriented programming? |
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A:22 | One of the main advantages of OO programming is its ease of modification; objects can easily be modified and added to a system there by reducing maintenance costs. OO programming is also considered to be better at modeling the real world than is procedural programming. It allows for more complicated and flexible interactions. OO systems are also easier for non-technical personnel to understand and easier for them to participate in the maintenance and enhancement of a system because it appeals to natural human cognition patterns. For some systems, an OO approach can speed development time since many objects are standard across systems and can be reused. Components that manage dates, shipping, shopping carts, etc. can be purchased and easily modified for a specific system |
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Q:23 | What are the differences between procedure-oriented languages and object-oriented languages? |
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A:23 | Traditional programming has the following characteristics:Functions are written sequentially, so that a change in programming can affect any code that follows it. If a function is used multiple times in a system (i.e., a piece of code that manages the date), it is often simply cut and pasted into each program (i.e., a change log, order function, fulfillment system, etc). If a date change is needed (i.e., Y2K when the code needed to be changed to handle four numerical digits instead of two), all these pieces of code must be found, modified, and tested. Code (sequences of computer instructions) and data (information on which the instructions operates on) are kept separate. Multiple sets of code can access and modify one set of data. One set of code may rely on data in multiple places. Multiple sets of code and data are required to work together. Changes made to any of the code sets and data sets can cause problems through out the system.Object-Oriented programming takes a radically different approach:Code and data are merged into one indivisible item – an object (the term “component” has also been used to describe an object.) An object is an abstraction of a set of real-world things (for example, an object may be created around “date”) The object would contain all information and functionality for that thing (A date object it may contain labels like January, February, Tuesday, Wednesday. It may contain functionality that manages leap years, determines if it is a business day or a holiday, etc., See Fig. 1). Ideally, information about a particular thing should reside in only one place in a system. The information within an object is encapsulated (or hidden) from the rest of the system. A system is composed of multiple objects (i.e., date function, reports, order processing, etc., See Fig 2). When one object needs information from another object, a request is sent asking for specific information. (for example, a report object may need to know what today’s date is and will send a request to the date object) These requests are called messages and each object has an interface that manages messages. OO programming languages include features such as “class”, “instance”, “inheritance”, and “polymorphism” that increase the power and flexibility of an object. |
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Q:24 | What is the use of friend function? | ||||||||||||||||||||
A:24 | Sometimes a function is best shared among a number of different classes. Such functions can be declared either as member functions of one class or as global functions. In either case they can be set to be friends of other classes, by using a friend specifier in the class that is admitting them. Such functions can use all attributes of the class which names them as a friend, as if they were themselves members of that class. A friend declaration is essentially a prototype for a member function, but instead of requiring an implementation with the name of that class attached by the double colon syntax, a global function or member function of another class provides the match. |
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Q:25 | What are the differences between public, private, protected, static, transient, final and volatile? |
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A:25 | Public: Public declared items can be accessed everywhere. Protected: Protected limits access to inherited and parent classes (and to the class that defines the item). Private: Private limits visibility only to the class that defines the item. Static: A static variable exists only in a local function scope, but it does not lose its value when program execution leaves this scope. Final: Final keyword prevents child classes from overriding a method by prefixing the definition with final. If the class itself is being defined final then it cannot be extended. transient: A transient variable is a variable that may not be serialized. volatile: a variable that might be concurrently modified by multiple threads should be declared volatile. Variables declared to be volatile will not be optimized by the compiler because their value can change at any time. |
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Q:26 | What are the different types of errors in PHP? | ||||||||||||||||||||
A:26 | Three are three types of errors:1. Notices: These are trivial, non-critical errors that PHP encounters while executing a script – for example, accessing a variable that has not yet been defined. By default, such errors are not displayed to the user at all – although, as you will see, you can change this default behavior.2. Warnings: These are more serious errors – for example, attempting to include() a file which does not exist. By default, these errors are displayed to the user, but they do not result in script termination.3. Fatal errors: These are critical errors – for example, instantiating an object of a non-existent class, or calling a non-existent function. These errors cause the immediate termination of the script, and PHP’s default behavior is to display them to the user when they take place. |
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Q:27 | What is the functionality of the function strstr and stristr? | ||||||||||||||||||||
A:27 | strstr:
Returns part of haystack If needle is not a This function is case-sensitive. For |
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Q:28 | What are the differences between PHP 3 and PHP 4 and PHP 5? | ||||||||||||||||||||
A:28 | Please read the release notes at http://www.php.net. |
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Q:29 | How can we convert asp pages to PHP pages? | ||||||||||||||||||||
A:29 | there are lots of tools available for asp to PHP conversion. you can search Google for that. the best one is available athttp://asp2php.naken.cc./ |
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Q:30 | What is the functionality of the function htmlentities? | ||||||||||||||||||||
A:30 | Convert all applicable characters to HTML entities This function is identical to htmlspecialchars() in all ways, except with htmlentities(), all characters which have HTML character entity equivalents are translated into these entities. |
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Q:31 | How can we get second of the current time using date function? |
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A:31 | $second = date(“s”); | ||||||||||||||||||||
Q:32 | How can we convert the time zones using PHP? | ||||||||||||||||||||
A:32 | By using date_default_timezone_get and date_default_timezone_set function on PHP 5.1.0 <?php // Discover what 8am in Tokyo relates to on the East Coast of the US // Set the default timezone to Tokyo time: date_default_timezone_set('Asia/Tokyo'); // Now generate the timestamp for that particular timezone, on Jan 1st, 2000 $stamp = mktime(8, 0, 0, 1, 1, 2000); // Now set the timezone back to US/Eastern date_default_timezone_set('US/Eastern'); // Output the date in a standard format (RFC1123), this will print: // Fri, 31 Dec 1999 18:00:00 EST echo '<p>', date(DATE_RFC1123, $stamp) ,'</p>';?> |
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Q:33 | What is meant by urlencode and urldocode? | ||||||||||||||||||||
A:33 | URLencode returns a string in which all non-alphanumeric characters except -_. have been replaced with a percent (%) sign followed by two hex digits and spaces encoded as plus (+) signs. It is encoded the same way that the posted data from a WWW form is encoded, that is the same way as in application/x-www-form-urlencoded media type. urldecode decodes any %## |
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Q:34 | What is the difference between the functions unlink and unset? |
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A:34 | unlink() deletes the given file from the file system. unset() makes a variable undefined. |
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Q:35 | How can we register the variables into a session? | ||||||||||||||||||||
A:35 | $_SESSION[’name’] = “Mizan”; | ||||||||||||||||||||
Q:36 | How can we get the properties (size, type, width, height) of an image using PHP image functions? |
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A:36 | To know the Image type use exif_imagetype () function To know the Image size use getimagesize () function To know the image width use imagesx () function To know the image height use imagesy() function t |
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Q:37 | How can we get the browser properties using PHP? | ||||||||||||||||||||
A:37 | By using
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Q:38 | What is the maximum size of a file that can be uploaded using PHP and how can we change this? |
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A:38 | By default the maximum size is 2MB. and we can change the following setup at php.iniupload_max_filesize = 2M |
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Q:39 | How can we increase the execution time of a PHP script? | ||||||||||||||||||||
A:39 | by changing the following setup at php.inimax_execution_time = 30 ; Maximum execution time of each script, in seconds |
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Q:40 | How can we take a backup of a MySQL table and how can we restore it. ? |
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A:40 | To backup: BACKUP TABLE tbl_name[,tbl_name…] TO ‘/path/to/backup/directory’ RESTORE TABLE tbl_name[,tbl_name…] FROM ‘/path/to/backup/directory’mysqldump: Dumping Table Structure and DataUtility to dump a database or a collection of database for backup or for transferring the data to another SQL server (not necessarily a MySQL server). The dump will contain SQL statements to create the table and/or populate the table. -t, –no-create-info Don’t write table creation information (the CREATE TABLE statement). -d, –no-data Don’t write any row information for the table. This is very useful if you just want to get a dump of the structure for a table! |
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Q:41 | How can we optimize or increase the speed of a MySQL select query? |
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A:41 |
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Q:42 | How many ways can we get the value of current session id? | ||||||||||||||||||||
A:42 | session_id() returns the session id for the current session. | ||||||||||||||||||||
Q:43 | How can we destroy the session, how can we unset the variable of a session? |
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A:43 | session_unregister — Unregister a global variable from the current session session_unset — Free all session variables |
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Q:44 | How can we destroy the cookie? | ||||||||||||||||||||
A:44 | Set the cookie in past. | ||||||||||||||||||||
Q:45 | How many ways we can pass the variable through the navigation between the pages? |
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A:45 |
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Q:46 | What is the difference between ereg_replace() and eregi_replace()? |
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A:46 | eregi_replace() function is identical to ereg_replace() except that this ignores case distinction when matching alphabetic characters.eregi_replace() function is identical to ereg_replace() except that this ignores case distinction when matching alphabetic characters. |
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Q:47 | What are the different functions in sorting an array? | ||||||||||||||||||||
A:47 | Sort(), arsort(), asort(), ksort(), natsort(), natcasesort(), rsort(), usort(), array_multisort(), and uksort(). |
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Q:48 | How can we know the count/number of elements of an array? | ||||||||||||||||||||
A:48 | 2 ways a) sizeof($urarray) This function is an alias of count() b) count($urarray) |
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Q:49 | What is the PHP predefined variable that tells the What types of images that PHP supports? |
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A:49 | Though i am not sure if this is wrong or not, With the exif extension you are able to work with image meta data. |
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Q:50 | How can I know that a variable is a number or not using a JavaScript? |
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A:50 | bool is_numeric ( mixed var) Returns TRUE if var is a number or a numeric string, FALSE otherwise.or use isNaN(mixed var)The isNaN() function is used to check if a value is not a number. |
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Q:51 | List out some tools through which we can draw E-R diagrams for mysql. |
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A:51 | Case Studio Smart Draw |
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Q:52 | How can I retrieve values from one database server and store them in other database server using PHP? |
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A:52 | we can always fetch from one database and rewrite to another. here is a nice solution of it.$db1 = mysql_connect(“host”,”user”,”pwd”) mysql_select_db(“db1”, $db1); $res1 = mysql_query(“query”,$db1);$db2 = mysql_connect(“host”,”user”,”pwd”) mysql_select_db(“db2”, $db2); $res2 = mysql_query(“query”,$db2);At this point you can only fetch records from you previous ResultSet, i.e $res1 – But you cannot execute new query in $db1, even if you supply the link as because the link was overwritten by the new db.so at this point the following script will fail $res3 = mysql_query(“query”,$db1); //this will failSo how to solve that? take a look below. $db2 = mysql_connect(“host”,”user”,”pwd”, true) So mysql_connect has another optional boolean parameter which now the following query will execute successfully. Thanks goes to Hasan and Hasin for this solution. |
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Q:53 | List out the predefined classes in PHP? | ||||||||||||||||||||
A:53 | Directory stdClass __PHP_Incomplete_Class exception php_user_filter |
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Q:54 | How can I make a script that can be bi-language (supports English, German)? |
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A:54 | You can maintain two separate language file for each of the language. all the labels are putted in both language files as variables and assign those variables in the PHP source. on runtime choose the required language option. |
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Q:55 | What are the difference between abstract class and interface? | ||||||||||||||||||||
A:55 | Abstract class: abstract classes are the class where one or more methods are abstract but not necessarily all method has to be abstract. Abstract methods are the methods, which are declare in its class but not define. The definition of those methods must be in its extending class.Interface: Interfaces are one type of class where all the methods are abstract. That means all the methods only declared but not defined. All the methods must be define by its implemented class. |
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Q:56 | How can we send mail using JavaScript? | ||||||||||||||||||||
A:56 | JavaScript does not have any networking capabilities as it is designed to work on client site. As a result we can not send mails using JavaScript. But we can call the client side mail protocol mailto via JavaScript to prompt for an email to send. this requires the client to approve it. |
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Q:57 | How can we repair a MySQL table? | ||||||||||||||||||||
A:57 | The syntex for repairing a MySQL table is REPAIR TABLENAME, [TABLENAME, ], [Quick],[Extended] This command will repair the table specified if the quick is given the MySQL will do a repair of only the index tree if the extended is given it will create index row by row |
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Q:58 | What are the advantages of stored procedures, triggers, indexes? |
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A:58 | A stored procedure is a set of SQL commands that can be compiled and stored in the server. Once this has been done, clients don’t need to keep re-issuing the entire query but can refer to the stored procedure. This provides better overall performance because the query has to be parsed only once, and less information needs to be sent between the server and the client. You can also raise the conceptual level by having libraries of functions in the server. However, stored procedures of course do increase the load on the database server system, as more of the work is done on the server side and less on the client (application) side.Triggers will also be implemented. A trigger is effectively a type of stored procedure, one that is invoked when a particular event occurs. For example, you can install a stored procedure that is triggered each time a record is deleted from a transaction table and that stored procedure automatically deletes the corresponding customer from a customer table when all his transactions are deleted.Indexes are used to find rows with specific column values quickly. Without an index, MySQL must begin with the first row and then read through the entire table to find the relevant rows. The larger the table, the more this costs. If the table has an index for the columns in question, MySQL can quickly determine the position to seek to in the middle of the data file without having to look at all the data. If a table has 1,000 rows, this is at least 100 times faster than reading sequentially. If you need to access most of the rows, it is faster to read sequentially, because this minimizes disk seeks. |
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Q:59 | What is the maximum length of a table name, database name, and fieldname in MySQL? |
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A:59 | The following table describes the maximum length for each type of identifier.
There are some restrictions on the characters that may appear in |
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Q:60 | How many values can the SET function of MySQL take? | ||||||||||||||||||||
A:60 | MySQL set can take zero or more values but at the maximum it can take 64 values |
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Q:61 | What are the other commands to know the structure of table using MySQL commands except explain command? |
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A:61 | describe Table-Name; | ||||||||||||||||||||
Q:62 | How many tables will create when we create table, what are they? |
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A:62 | The ‘.frm’ file stores the table definition. The data file has a ‘.MYD’ (MYData) extension. The index file has a ‘.MYI’ (MYIndex) extension, |
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Q:63 | What is the purpose of the following files having extensions 1) .frm 2) .myd 3) .myi? What do these files contain? |
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A:63 | In MySql, the default table type is MyISAM. Each MyISAM table is stored on disk in three files. The files have names that begin with the table name and have an extension to indicate the file type. The ‘.frm’ file stores the table definition. The data file has a ‘.MYD’ (MYData) extension. The index file has a ‘.MYI’ (MYIndex) extension, |
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Q:64 | What is maximum size of a database in MySQL? | ||||||||||||||||||||
A:64 | If the operating system or filesystem places a limit on the number of files in a directory, MySQL is bound by that constraint.The efficiency of the operating system in handling large numbers of files in a directory can place a practical limit on the number of tables in a database. If the time required to open a file in the directory increases significantly as the number of files increases, database performance can be adversely affected. The amount of available disk space limits the number of tables. MySQL 3.22 had a 4GB (4 gigabyte) limit on table size. With the MyISAM storage engine in MySQL 3.23, the maximum table size was increased to 65536 terabytes (2567 – 1 bytes). With this larger allowed table size, the maximum effective table size for MySQL databases is usually determined by operating system constraints on file sizes, not by MySQL internal limits.The InnoDB storage engine maintains InnoDB tables within a tablespace that can be created from several files. This allows a table to exceed the maximum individual file size. The tablespace can include raw disk partitions, which allows extremely large tables. The maximum tablespace size is 64TB. The following table lists some examples of operating system file-size limits. This is only a rough guide and is not intended to be definitive. For the most up-to-date information, be sure to check the documentation specific to your operating system. Operating System File-size LimitLinux 2.2-Intel 32-bit 2GB (LFS: 4GB) Linux 2.4+ (using ext3 filesystem) 4TB Solaris 9/10 16TB NetWare w/NSS filesystem 8TB Win32 w/ FAT/FAT32 2GB/4GB Win32 w/ NTFS 2TB (possibly larger) MacOS X w/ HFS+ 2TB |
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Q:65 | Give the syntax of Grant and Revoke commands? | ||||||||||||||||||||
A:65 | The generic syntax for grant is as following > GRANT [rights] on [database/s] TO [username@hostname] IDENTIFIED BY [password] now rights can be a) All privileges b) combination of create, drop, select, insert, update and delete etc.We can grant rights on all databse by using *.* or some specific database by database.* or a specific table by database.table_name username@hotsname can be either username@localhost, username@hostname and username@% where hostname is any valid hostname and % represents any name, the *.* any condition password is simply the password of userThe generic syntax for revoke is as following > REVOKE [rights] on [database/s] FROM [username@hostname] now rights can be as explained above a) All privileges b) combination of create, drop, select, insert, update and delete etc. username@hotsname can be either username@localhost, username@hostname and username@% where hostname is any valid hostname and % represents any name, the *.* any condition |
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Q:66 | Explain Normalization concept? | ||||||||||||||||||||
A:66 | The normalization process involves getting our data to conform to three progressive normal forms, and a higher level of normalization cannot be achieved until the previous levels have been achieved (there are actually five normal forms, but the last two are mainly academic and will not be discussed).First Normal FormThe First Normal Form (or 1NF) involves removal of redundant data from horizontal rows. We want to ensure that there is no duplication of data in a given row, and that every column stores the least amount of information possible (making the field atomic).Second Normal FormWhere the First Normal Form deals with redundancy of data across a horizontal row, Second Normal Form (or 2NF) deals with redundancy of data in vertical columns. As stated earlier, the normal forms are progressive, so to achieve Second Normal Form, your tables must already be in First Normal Form.Third Normal Form I have a confession to make; I do not often use Third Normal Form. In |
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Q:67 | How can we find the number of rows in a table using MySQL? | ||||||||||||||||||||
A:67 | Use this for mysql >SELECT COUNT(*) FROM table_name; |
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Q:68 | How can we find the number of rows in a result set using PHP? | ||||||||||||||||||||
A:68 | $result = mysql_query($sql, $db_link); |
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Q:69 | How many ways we can we find the current date using MySQL? | ||||||||||||||||||||
A:69 | SELECT CURDATE(); CURRENT_DATE() = CURDATE() for time use SELECT CURTIME(); CURRENT_TIME() = CURTIME() |
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Q:70 | What are the advantages and disadvantages of Cascading Style Sheets? |
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A:70 | External Style SheetsAdvantagesCan control styles for multiple documents at once. Classes can be created for use on multiple HTML element types in many documents. Selector and grouping methods can be used to apply styles under complex contextsDisadvantagesAn extra download is required to import style information for each document The rendering of the document may be delayed until the external style sheet is loaded Becomes slightly unwieldy for small quantities of style definitionsEmbedded Style Sheets Advantages Classes can be created for use on multiple tag types in the document. Disadvantages This method can not control styles for multiple documents at once Inline Styles Advantages Useful for small quantities of style definitions. Can override other Disadvantages Does not distance style information from content (a main goal of |
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Q:71 | What type of inheritance that PHP supports? | ||||||||||||||||||||
A:71 | In PHP an extended class is always dependent on a single base class, that is, multiple inheritance is not supported. Classes are extended using the keyword ‘extends’. |
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Q:72 | What is the difference between Primary Key and Unique key? |
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A:72 | Primary Key: A column in a table whose values uniquely identify the rows in the table. A primary key value cannot be NULL. Unique Key: Unique Keys are used to uniquely identify each row in the |
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Q:73 |
The structure of table view buyers is as follows:
the value of user_pri_id the last row 999 then What will happen in Condition1: Delete all the rows and insert another row then. |
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A:73 | In both cases let the value for auto increment field be n then next row will have value n+1 i.e. 1000 |
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Q:74 | What are the advantages/disadvantages of MySQL and PHP? | ||||||||||||||||||||
A:74 | Both of them are open source software (so free of cost), support cross platform. php is faster then ASP and JSP. |
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Q:75 | What is the difference between GROUP BY and ORDER BY in Sql? | ||||||||||||||||||||
A:75 | ORDER BY [col1],[col2],…,[coln]; Tels DBMS according to what columns it should sort the result. If two rows will hawe the same value in col1 it will try to sort them according to col2 and so on.GROUP BY [col1],[col2],…,[coln]; Tels DBMS to group results with same value of column col1. You can use COUNT(col1), SUM(col1), AVG(col1) with it, if you want to count all items in group, sum all values or view average |
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Q:76 | What is the difference between char and varchar data types? | ||||||||||||||||||||
A:76 | Set char to occupy n bytes and it will take n bytes even if u r storing a value of n-m bytes Set varchar to occupy n bytes and it will take only the required space and will not use the n bytes eg. name char(15) will waste 10 bytes if we store ‘mizan’, if each char takes a byte eg. name varchar(15) will just use 5 bytes if we store ‘mizan’, if each char takes a byte. rest 10 bytes will be free. |
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Q:77 | What is the functionality of md5 function in PHP? | ||||||||||||||||||||
A:77 | Calculate the md5 hash of a string. The hash is a 32-character hexadecimal number. I use it to generate keys which I use to identify users etc. If I add random no techniques to it the md5 generated now will be totally different for the same string I am using. |
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Q:78 | How can I load data from a text file into a table? | ||||||||||||||||||||
A:78 | you can use LOAD DATA INFILE file_name; syntax to load data from a text file. but you have to make sure thata) data is delimited b) columns and data matched correctly |
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Q:79 | How can we know the number of days between two given dates using MySQL? |
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A:79 | SELECT DATEDIFF(‘2007-03-07′,’2005-01-01’); | ||||||||||||||||||||
Q:80 | How can we know the number of days between two given dates using PHP? |
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A:80 | $date1 = date(‘Y-m-d’); $date2 = ‘2006-08-15’; $days = (strtotime($date1) – strtotime($date2)) / (60 * 60 * 24); |
A tremendous work…. very useful indeed.
Amazing. I will add some question and answer in this post very soon. Keep up good work, Mizan.
this is very use full question and answer ………Keep adding more question and answer . Thank you,
I was looking for this kind of interview questions ans answers. Nice work man. This kind of post will help us very much. I am waiting for full, i mean all 200 quetions and some extra questions from Hasin Vi and fom others.
Keep it up.
Rakib
Programmer/Web Developer
http://www.systechdigital.com
Nice one Mizan Bhai. I will surely go through the list.
# What is ‘float’ property in CSS?
# What is descendent structure in CSS?
# What is Child Descendent structure in CSS?
# How to create a class in JavaScript?
# Are namespaces are there in JavaScript?
# What is JSON? What are the notations used in JSON?
# How you provide security for PHP application?
# How to get Query String in PHP for http request?
# How to get the http Request in PHP?
# What is SQL Injection in PHP security?
# What is cross site Scripting?
– Rakib
– rakibulislam.wordpress.com
Hi Mizan,
Your collection of questions is really very good and valuable. I am also working on opensource projects and try to share my knowledge about PHP in my blog. I you get time please visit this also,
http://asitkatiyar.wordpress.com/
Asit
Hi asit,
I have recieved ur php quetion and answer, realy it will be benificial for me in my php job,I request u that update ur qustion and answer with good example, i hope that oncentrate at this my point.
Thanks
Gaurav Gupta
Delhi
Hi,
Really good works. It would definitely beneficial for all the guy.
Many many thanks.
Jaiprakash
Hi there,
i’m happy to meet you with this perfect paper,
i try to translate these mysql tips to my own site java.name.tr
mysql and php are the most popular development scripting language and db so that these papers are popular in my country, too.
Thanks,
Kenan KARA
Super tips its really very helpfull
Hi,
Really good works. It would useful for all the guy who are all interested in php.
Many many thanks.
bharathi
Hi there,
You are great , to get perfect answers above, very useful for the one who is going for php interview
Hi,
Great Work,Thanks for u.
This will be very helpful to me.
Continue this work.
SQL Injection – Is Good or Bad to use in coding? Explain right way to use it? If bad, how to prevent it from getting misuse?
Hi Mizan,
Hope you are fine.. u have done a good work!
sorry but there is a slight correction required in question no. 4
Q:4 In how many ways we can retrieve the date in the result set of
MySQL using PHP?
it should be data not date.
rest the questions are really great..
catch u some day.
Thanks & Regards
Parth
Hello,
Thanks u.
This will be very helpful to me.
Tomorrow is my interview and i have gone through
this section,lets see the result.
Thanks
Pooja.
Thanks you for this post, its a great resource. It’s great for interview questions to ask. Its also a good quiz to take to test yourself.
How can you rate CSS types like (embedded,inline,external) while using and which type will get 1st proiority why?
Thank u very much,Excellent q-a.
Hi Mizan,
This is
Hi
Thanks for your help.
Amazing Job.
Gaurav
Thanks a lot, Its very useful to get details about the various small concepts in depth
Thanks u.
This will be very helpful to me.
Tomorrow is my interview and i have gone through
this section,lets see the result.
Hello Mizanur Rahman,
Asalamu Alaikum,
I am from Tamil Nadu. I am working as a web developer in a small Web Development Company. I want to improve my PHP and Mysql Knowledge and as well as My Communication Skills.
Please Provide some instructions to me to become a Good PHP Programmer.
Thanking you,
Thanks with Regards,
B. SYED AHAMED
Hello Syed,
Communication is not a problem first make one good environment then automatically increase your professional strength. first don’t worrying about your communication, daily update your programming strength then refer so many book and some time spent to your new friend circle. that shall.take it easy ya….
Hi Syed
Thanks for your comment. In order to improve your PHP and MySQL knowledge always keep you updated with the current progress of these two most popular platform. You can read professional PHP 5 from wrox publication or even PHP power programming for a solid understanding of PHP Object Oriented Programming. You can study a good RDBMS book to understand how SQL works specially how to make your database optimized and operation faster. For your communication skill you can always talk with other people to increase your speaking and listening capability. for writing, start blogging 🙂
take care and drop me a line if you need anything
regards
Mizan
Nice dude…I like this one.
Hi,
Great Work Mizanur Rahman.
I’m Shankhar working in a Web Development Company in Chennai.
Your tip helped me a lot.
Thank you very much,
Thanks for sharing,
Shankhar
hi shankar..
i would like to work as a PHP developer. I complleted my B.Tech in 2011. and lookin for job in PHP platform. Can you help me to get a job..?? contact me (mail2skarthick@gmail.com)
Hi All,
i need some help on making a file or image downloadable…. and also want to know a lot about cookies..
Help me on these topics………
Waiting for reply..
Thank you
Hi
This is really very helpful only on PHP, but i think it did not cover most of the topics of MySQL like ‘why Joins are efficient than Subqueries?’,etc..
Can you please add questions related to MySQL also in place?
hello, to every one
this all questions helps me lot.
thanks a lot to all of u.
Hi all!
Very interesting information! Thanks!
Bye
what is the difference between $$ and $? Give a example of $$ .
hi Javed
in PHP
$ sign is used to indicate variable
$$ is used to indicate Variable variables
now what does a Variable variables means. here is an example
$name = “mizan”; // a simple php variable
now can you tell me what does the following line mean?
$$name = $name;
well its pretty simple, it will just replace $name with mizan
so $mizan = mizan;
if i echo $mizan then i will get the desired value. so we are creating dynamic variables during run time. you must have a question , what is the application of such variable?
in many situation we need to create variables dynamically and do operation with them. this is ideal on such situation.
i hope it answers your question.
Thanks Mizan Vai for ur nice solution.
Between php and java which one is most preferable and why?what are the differences between them?
A great collections of all needy answers about PHP. thank you mizan bhai.
Fantastic! Each and every questions (with answers) make brightness of our future. Well done Mizanur Rahman. Keep adding this. Thank you, once again
this is really a great keep adding this
thanks
This was very very usefull for me
thanks u lot
Its a excellent information about PHP interview question. thnx
The above questions are very good and helpful, please provide me some more questions like this, I’m prepairing fro my PHP and My SQL interviews.
Thanks,
Megha
Good work dude ! Was looking for exactly this.
Thanks !
Hi Mizan
Your content is really helpful and really looking like this info regarding FAQ’s.
I need a Suggestion from you.
I was working as a Designer and now learned PHP 4.0 just a month ago. Now trying for a Opportunity in PHP. What kind of stuff i should be in perfect to get a nice job.
Regards Sainath
hi
now i am working in php very use full for your tips.
by jeyasankar.a
Thanks man for all that info.
Actually a great collections of answers to the general PHP questions 🙂
Hi all,
thankx for share all problem with us pls update ur problem
because we can improve our knowleg.
I was looking such kind of interview question and answer
ohh really it’s very use full for us
Amazing and appreciable
thanx Mizanur
Go ahead
Dear
Good Post,
I am satisfied, waiting for full version…
A:61 describe Table-Name;
explain Table-Name;
I read given questions and answers i like it, it is very help full for a new comer or experience programmer in php .
Currently i am working in http://www.applelounge.com is web development company in New Delhi so i think it is help full for everyone.
Thanks & Regards,
Naren Samant
hello
Gret job dude ,
the content was different and really useful
thanks!
Thanks buddy!
I am going for a PHP interview tomorrow and it’s really helpful. Please also do same kind of work for some other languages also, like VB, VC, Java, etc., if possible!!
Thanks again,
Shahzad
thanks..
Q. How can we sort multidimension array?
hi,
i am umesh yadav, i was searching for php interview study material. thanx a lot for above.
regards.
umesh yadav
Hello,
This php-mysql-interview-question is very useful for interview as well as it also increase knowledge, very very thanks.
Thanks for the collection published. Mizan I just want to know what are the certification a person can do in php and what are the benifits of doing that in job regard. If you know please tell me the books so that i can start.
Hi,
It’s a greate set of INTERVIEW QUESTION & ANSWER in PHP
but I need more questions and answer in session and cookies.
thanks..
Simply Great
Awesome job!!! Really usefull stuff
I just want to know about the certifcation program in Mysql. Please if any body knows about it please help me.
Thanks in advance
A.Mustafa
Hi
It is very useful for php programmers, write now i am studying php, could u help me the programming logic for php, my friends
are saying to study dotnet, but i am interest in PHP.
Future for PHP?????????
Please advise me as soon as possible.
Thanks
Ganesh.B
great job, it very helpfull for every one……. keep it up……
amazing work,really very helpful to use for the interview.You should place some example of php which is given a typical ans.like print $a=12==123; put some melodious and brain storming exaples in php.But nice work
Great start! I think it could use some grammar checking, and a little bit of updating but overall I think it’s great!
Greate i like it thanks
Hi
It is very useful posting and great work.
i searched for few PHP questions for selecting candidates by written test but i got very few questions from other sources.
Your posting is very useful for me.
thanks
Regards
sudandira
Hii It is Very Nice to see all your interview questions.
I have a Quick Question currently am working as a web Designer from past 1 year…But am interested in Java Development..
what should i Do?
it is good to be web Development or shall i jump into java development…
this is really usefull for interview thanks a lot for posting all this.
Thanks,
Vijay Kandoria
Thanks ……………..
Hi Rahman,
You’re interview questions are really superb. I get some knowledge after i go through all the questions posted above. There are some other questions asked by an interviewer in a company. They are
1.What is DDL and DML?
2. Difference between copy and move_uploaded_file
3. How to swap a value without using a third variable?
4. Which function is used to send attachment in mail?
5. Which table in mysql is used for transaction process?
Cheers,
Sathish Kumar.R
I am also a PHP programmer from india .Your Forum is very good for those student or person wants to start career as a php developer.Nice and thanks
Fawwad Ali Khan
Helo Sir,
Realy your questions are good.
Thanks.
Bagyaraj Sekar.
hi
I am jeyasankar php developer and web developer from chennai. I am a Software Engineer by profession. I love to work on open source projects and specially web based systems. I am a moderator of the PHPExperts, the largest PHP Users group in india and chennai.
so any query ask me my mail id ,i will send replay.
thank you
I am jeyasankar php developer and web developer from chennai. I am a Software Engineer by profession. I love to work on open source projects and specially web based systems. I am a moderator of the PHPExperts, the largest PHP Users group in india and chennai.
i am experts in this area of all type server and SEO and cms.
Thanks for the perfect answers for those questions. it helped me interviews. please add more questions from
http://www.geekinterview.com/Interview-Questions/Programming/PHP
in the above, site job seekers ask their questions but don’t get right(perfect) answers .
please try to answer those questions in this site.
Thanks again( Iam not so good in English to express my feelings).
HI
Its very useful
Thank you
I must say dats a wonderful compilation of exhaustive question on php & mysql too .. i will help u , if i can add more question & answer to it..
n i wud just ask u 2 give answers with some examples as far as possible..coz its much better way to explain any point.
thnks a lot
Really, Its very helpful and a straight forward answer.It helps a lot for the interview guys.
Hi Brother Assalamu alaikum
i am mohamed musammil,this makes a very helpful to our php Guys.also i need the tutorial and Sample Programs realted to Cake PHP Framework.
Thanks & regards
Musammil
Hey
Man u have done a greate task here …
Nice Nice Very Nice
Simply Great
Thanks & Regards,
Jatin
Thanks,
Very useful and helpful…..
cool dude! keep it up, well done! all the very best for everything!!
good questions and answers . it’s very usefull.
It’s really impressive and helpful stuff…
Your All information are good!Thanks For Creation.
I Want to Achive A good Knowledge Of PHP.
Please Give Me some tipes for it.
YOUR WELL WISHERS…..
ABHISHEK ANAND.
Hi,
This is Ruchi.
First of all thanks this is a nice set of question.
i write some more question here.
1-Tell me five function which are related to string.
2-how i upload a file.
3-find out the 2nd highest record of the table.
HI All,
This site is tremendous. This is very useful for me and for all who are interested in PHP. Good Work.
Hi Ruchi,
1. Five Functions related to string are:-
a) trim()
b) substr()
c) strstr()
d) str_replace()
e) stristr()
2.
$photo_folder=’upload_images\’;
$path_Im=pathinfo($_FILES[‘image_name’][‘name’]);
if($path_Im[‘extension’] ==’jpg’)
{
$img_name=”image.”.$path_Im[‘extension’];
move_uploaded_file($_FILES[‘image_name’][‘tmp_name’],$photo_folder.$img_name);
3. $query = “SELECT * FROM `table_name` ORDER BY field_name` DESC LIMIT 1 , 1 “;
Thanks Suman,
but in the answer of third question u write a query but this query give me last record. But i want to find out the secend last record.
or one more question
How i find the n’th record from a given table
that’s fine
How can I make a script that can be bi-language (supports
English, German)?
I want to know about this feature more. if you suggest me with an example that will be much helpful for me. Any web link will works fine.
thnx.
Thanx a lot. It really helpful.
Very useful question and answers .I always follow this site before I interviewed. but I expect more class oriented question and answers from booleandreams.
Hiiieeyyyy,
how we can control the .httpds file with using .htaccess
For permit the Mod Redirect permissions.
Thanks
Priyank Sharma
(+91)-9928566520
hi
I have only one word for you.
………………………………FANTASTIC…………………………
ALL THESE QUESTIONS ARE IN
http://www.phptalk.com/index.php?page=details&id=12
AND I GOT ALL ANS HERE.
thanks for the post.
Yes really very good help.But i need help cakephp and Zend framework.Waiting ur reply
Hi,
All of the Question`s are good.
Thanks
Hi Mizanur Rahman,
Yesterday i faced an interview for the post of Php Developer in my city, i gave the interview and got selected just because of few questions which others didn’t knew like max size of sqldb, $$message, how to transfer one db table to another etc. . I want to say you ‘THANK YOU’. Without ur this contribution i was unable to crack that interview.
Hats Off to you Mizan.
Cheers 🙂
this is not a good job to copy and paste this question from another website. try to do yourself what you can.
Mr. Machine, thanks for your response. but please read the first paragraph of this page, it clearly says these questions are taken from different site and compiled to a single place. I am not taking credit by saying that its all mine. I hope that clears your misunderstanding. 🙂 cheers.
hmmm. i like you guys and i also know you. you r good developer as well.
Thanks Sir your question and answers are very good and very helpful for me and all many people
But can you give me like some mysql_query relative questions like…………..
E.G.-
how to fined higest salary, lowest salary , second highest salary, left join , right join, inner join. etc.
because this questions is very imp. for interviews
Thanks and Regards
Harsh Gaur
harshgaur21@gmail.com
these question are very helpful for me.
i have selected in many company. i have read only these question.
very very thanks
Pawan Sharma
I m also face all the questions in one company technical written test round and i face plenty of them correct but some of them are also added now from my side which i faced now are as follows–
Q-1. What is the Javascript type?
Ans- For JavaScript, use type=”text/javascript”.
Q-2 What is the advantage and Disadvantage of MySql and PHP?
Q-3 When we used @ symbol in php?
Very helpful. Goodjob!!. Thanks for all the hardwork.
AssamAlaikum bhai.
Good job,Its great !!! thank u
Thanks i think it help me to lot, u said ur working in open source i need interview questions from open source if possible please help me
Thanks Sir your question and answers are very good and very helpful for me and all many people
But can you give me like some mysql_query relative questions like…………..
E.G.-
how to fined higest salary, lowest salary , second highest salary, left join , right join, inner join. etc.
because this questions is very imp. for interviews
Thanks and Regards
Hiren Patel
hello sir,
I was looking for this kind of interview questions ans answers. Nice work sir.
I read given questions and answers i like it, it is very help full for a new comer or experience programmer in php .
now i m able to face interview.these ques r very cutial for me bcoz on 23 i”ll face a interview.
thanks a lot sir………..
I read the questions and answers and I get good and positive results in job. These questions and answers really helpful for interviews.
Given Question Answer are really helpfull i liked it..
most importantantly itw way of presentin question answer
i have find all type of Q. in this site,
but some Q not pls send this ans.
…thank u
1>can i fire triger in multiple table?
2>what diffrent type of payment getway?
3>how to find server when user login and logout?
hello sir
thanks alot for such kind of good questions.
sir please answer me how we can retrieve the value from data base in login page and restrict the user name password
This is very much helpful. Thanks
hi
all php developer very useful all tips,if any php or mysql issuse plaese send me your issuse i willl send good solutions.
regards
jeyasankar.a
Great work.
Want more of this type of question.
Keep it up 🙂
Regads,
Hetal Sagar.
Rahman,
Greets for your hardwork. If I have seen this before getting into interview i’d have got placed. I posting some PHP question which I have asked by my interviewer to reject me. Would you mind, if I tell u to check ur spelling in your posts?
🙂
What is output buffering?
What is register globals and why it is unsecure?
If particular server is accessed by many, whether would be created for all?
mysqlconnect vs mysqlpconnect ?
difference between explode and join methods()?
Given SQL table with data in one column, ‘Red’ 10 times, ‘Green’ 7 times, Blue 5 times, White 3 times, write the query to sort the elements so that the element with maximum no. of occurrence will come first and so on. (In our case it should be same order as I’ve written the elements)
Who will display a table of contents in alternate back color
Who will you show/hide particular table
How will u refresh particular section of webpage without affecting others’
hi
this is really excellent tips for me. and
this will benifit to my interview.
so pls update a qustion and answer.
pls send me question and ans on mail. about java,php and mysql.
i really thankful to u.
kushal
Hi,
This is very useful to me, So am very very happy to looking through this site.
With Warm Regards
————————–
Sudharshan Reddy
Nice job.
Some answers are not correct. For example, defining varchar in Mysql as varchar(10), then inserting ‘mysql’ will take 6 bytes instead of 5.
Database normalization has 7 forms instead of 5.
I don’t know if PHP faster than JSP or not, since JSP needs to be complied into servlets first, but definitely PHP is slower than JAVA.
Hi Kev
what makes you think PHP is slower than Java?
Java is complied, PHP is interpreted. Even if the recent PHP can be complied into Opcode, it is still slower than Java. Google it and you will see that.
Hi Kev
thanks on focusing on this. the issue reveals in which aspect php is slower than Java. and the thing you just found, i have faced the issue 3 years back while i was building a large VOIP billing software. PHP File IO is very slow and slowest of all the available programming language. So i think that is one point where we should not use PHP, i personally prefer Perl or Python for file IO. I think you also know the fact that Java IO was painfully slower and then they had to come up with new implementation of IO known as NIO. so lets see if PHP comes up with something cool and new in future.
thanks
Mizan
Hi,
Thanks a lot. Very nice Questions.
hey rahman,
many thanks to u for bunch of questions and answers
JAZAAK ALLAH…. MAY ALLAH BLESS ALL WITH THE BEST
hi,
its too good and nice.it helps up to resolve some basic PHP fundamental questions, which we perhaps miss in our basic training.
nice jobs dear.
Hi ,
This is Palani.K form india , first i want say thanks for hard work to prepare this interview questions , its very useful to every one. how to focus on interview .
thanks & regards
Palani.K
Thanks a lot Mizan Bhai
This is really excellent work.
Greate work!……..
really good work……………………exlnt
hello,
how to add paypal for any website which has any product to sell to the interested buyer using php mysql. it would be a great help if u can assist.
thanks
Hello,
I want to show a little mistake in this page.
Give “” before span of Q.73
all other tips are very useful.
Thanks.
Hmm… there’s a good book too if you want to learn more about php – http://www.dealsshoppie.com/product/search.php?ID=0470096004&product=PHP+%26amp%3B+MySQL+For+Dummies
Hello,
Really lovely work, Great Job.
Very Thanks
Yogendra Kaushik
Hello Mizanur,
Thanks buddy…really helpful 🙂
if you aware about other good que-answers in pdf format plz give the link…anyother know plz share…
thanks.
Hi, Thanks Its really very helpful
Helo…Thank you….it help more than my expectations. i can get more idea & knowledge through it.
Hi,
I need to store and retrieve Other indian languages(Tamil with English) in phpMySQL
very nice source for php & mysql developer
realy interestibng and helpful
thanks
Hi Guys! Thanks for questions nd all comments, these are really very helpful. I appreciate — keep it up
Hi it was really helpful and got an idea what how the questions will be. Thanks alot.
How many tables mysql database can have?
thank u..
it was really helpful…..
great work…
Thanks a lot.its a very very helpful one.i really came to know lots of basic things from this.excellent job.
thanks you….
it is very helping to clear concept.
What can i say……… Great Work
Thank U Mizanur
thanks for really perfect article i ever seen.
Hi Mizanur Rahman,
It’s a amazing article for php developers
Thankz,
A.Mubarak Ali.
hi..
great work dude..
thanx.
THANK YOU VERY MUCH.YOU HAVE DONE A GREAT WORK.
thanks.
very nice source for php & mysql developer
greate work man///
thanks a lot…
do it more for us…
can you tell me that what is the easy way to learn about XML?
Great work bro, really helpful Thanks!
hi mizan,
really good job.
put some more practical senario questions such as
1) does php support application context.
ans: yes you have to manage it through cookies.
2) how you will manage cookies at application level ans: while setting cookies set cookie path to application level
3)can we use session_register and cookie setting after
html start tags.
ans: no, have to use them before html start tag.
Nice collection of Questions.This will be vry Helpful for us….
All questions are gr8, but I wan’t you to put some practical and logical questions more on php and Mysql…..
very nice & useful for referring php info
Hey dude
Your questions and answers are really helpful to the ppl like me who wish to make a career as a PHP programmer.
Very Helpfull.
Million thanks to you.
This is one of the best collection of question and answer about php. Thanks for your great work
Thanks man , who have posted all these valuable questions and their respective answers.
its really a wonderful job.
U better to create a blog and it will be much rated.
Good bye.
excellent work i really appreciate the guy who collect this stuff!
Total 5 types of tables we can create
1. MyISAM
2. Heap
3. Merge
4. INNO DB
5. ISAM
very nice way to prepare yourself a php and mysql for the interview.
Hi,
Tremendous work……..
I got a lot of new information……
keep this….thanks…….
hi,
your questions are really helpful.i just want some help in smarty.so can u plz publish some interview question on smarty also.
u have done greate job dude.
and u have a greate collection of questions, which realy help full for the interview..
thanks.
JAZAK-ALLAH
hello sir
thanks alot for such kind of good questions.
who will be help full to every one who is beginner to give interviews.
Very Helpful question for Interview
Thanks
Hi,
i am sunita i have just completed my PHP,i m getting some problem regarding this,actually i have installed the software properly but still i m unable to create my database pls tell me the solun regarding this
solution
Your answer to question 16 contradicts itself. You say that nl2br() inserts before newlines, but then you say that echo nl2br(“god bless\n you”) will output “god bless you”. The output will, in fact, be “god bless\n you”.
My comment (concerning nl2br) was not rendered on the page as I intended. The last sentence was meant to show the break tags. I’ll try this:
…you say that echo nl2br(“god bless\n you”) will output “god [break tag] bless you”. The output will, in fact, be “god bless[break tag]\n you”.
Hi Sunny
I think you are doing something wrong here. i think my answer is right. can you please read it carefully. i said the break will be after bless and there will be no \n once nl2br is run. so i do not know where you are getting this answer. if you write the expression in a single quote then the result will be completely different. try out by yourself 🙂
thanks for stopping by
Hi
I’m looking for a way to encrypt data.
these are the steps:
1) User login to the website.
2) ask to download a file from Mysql database.
3) The system encrypt the file using user (email,passphrase).
4) The user collect the encrypted file.
5) Then decrypt the file using (email,passphrase).
6) Using any programming laguange compatible with PHP
good work, thank a lot 😀
this is very help ful to me
Hi all,
Thanks Mizan, its a very useful kit for me.
My question is
whats tag that are supported by both IE and Netscape.
Sunil Chandigarh(India)
i m getting some problem regarding this,actually i have installed the software properly but still i m unable to create my database pls tell me the solun regarding this
i m unable to create my database pls tell me the solun regarding this
install any wamp server then goes to PHP Admin and read each sentence you will be able..i hope sooooo,………..
i do not know where you are getting this answer. if you write the expression in a single quote then the result will be completely different. try out by yourself
Your questions and answers are really helpful to the ppl like me who wish to make a career as a PHP programmer.
if you aware about other good que-answers in pdf format plz give the link…anyother know plz share…
I m getting some problem in button event.
How can i attach an event on button.
Hi,
Thank you for help
Great work man.Very helpful for others .keep going
Hello sir
i want to know how to fetch records from data table in row by row after every character.??
Thanks for the good questions & answers
really good one for nw commer in php…
Hi friends,
these infornmation is very useful.
q: how do you destroy a singleton?
a: create public method to run
self::$singleton_instance=NULL;
Hi…
thanq so much…. really this is very useful to any php beginners….. keep going with your brilliant work…
Regards
Praveen
Hi I’m working as a PHP developer since 8 months i was getiing bored in my job and was planning to move to java would anyon elet me know other than web development what else we can do in PHP my concern is i have learnt PHP i don wan to let it go i want t build my own applications in PHP.
It is really good.
hi i am new to php and i want make my carrier as php professional.
can plz guide me.how do i start?
It will be very helpfull of you
by.
speed of mysql query with and without index
Hi Mizan,
Its really a gd content in php. excellent jobs
Thanks
Really You done a great job in the Fresher point of view…!!!
Thanx From core of Heart..
Sir Just send me code for the connection between php and Oracle..
Gret job dude ,
the content was different and really useful
thanks!
thanks a lot for such kind of question
i request to u also post same kind of question in java,c,c++
Gr8 collection of php questions and answers.. It helped me a lot…. thanks a lot.. cheers..!!!
Q1. How to handle file in php?
Q2. How to read content of a text file and write data into a text file in php?
Q3. What is function of the following operator in php?
= = =
What is the difference between if ($a= =$) and if ($a= = =$b)
Q4.How to calculate the length of an array?
Q5.Does the count() can calculate the length of a string array?
Q6.
$arr=”aaaaa”;
echo count($arr);
what is the output?
Q7.Suppose we are doing LEFT JOINING with two tables. It will take all records from left tables and the matching records from the right tables. If there is no match in the right
Table then it will insert null values.
The Question is write a LEFT Join query that will insert some default values in the place of null using SQL function.
Q8. What is different between unique key and primary key?
Suppose there is only one field in a table that has unique values. What key will i chose for this field? Unique key or primary key. Give explanation.
HI
These questions are really helpful to all
thanks for ur help,gud work done
good work
nice work
I’m Simeon Olusola Gbeleyi from Lagos, Nigeria a web developer and software developer. I really enjoy your interview questions and answers but the additional questions I need reply on include
1, how to generate random codes using php
2, how to search and display uploaded saved pictures 4rm mysql database
3, how to build a shopping cart site using php
Thanks
Thanks for the great work! Cool blog. You will find several opinions on this topic and this blog states the problem very good.
PHP rocks……….
very good collection…………..
Thanks a lot to help us to get a job and also help to learn a lot.
i want sql question with answer
and also i want php question with answer too. will u able to send it for me
Hello…
This very nice paper… Thanks…
Waiting For more question,ans…
Thanks
thnx it is very helfull for us
Hi I shashi having 3 years experience in Php domain I read this articles.This is realay good for fresher as well as experienced.It gives all overview details of Php.I really like this bcause it gives confidence to deploy yourself in the market.
Thanks,It is very helpful for the persons who appearing an interview.
Assalamu alaikum,
This is syed. give idea for zend certification exam
nice list !!!
thanks its very useful code..
First of all, Thanks a lot for this post…
I have a question about cookies
whenever i try to create cookie it shows an error about its header….
Pls post an article about cookies in details
Hello sir
good n helpful collection,,,
thnks for sharing
keep it up !!
Hey Bro its good to see that people, one like you are sharing knowledge in this way as u did…its extra-ordinary good….helped me in my university viva xam….thanx to u….keep it up!
Hi there,
i’m happy to meet you with this perfect paper,
i try to translate these mysql tips to my own site java.name.tr
mysql and php are the most popular development scripting language and db so that these papers are popular in my country, too.
Thanks,
Kenan KARA
HI,
Gud questions with specific answers,I was wondering if their are such gud blogs available for Zend and MVC architecture interview questions
there are still many questions which are missing.
great work my dear brother…….
Thanks a lot. These interview questions helped me lot to crack PHP interview.
Thanks I got the job.
thanks…
Great work
thank u very much…..
56.How can we send mail using JavaScript?
Answer : do an ajax call to a php script
(not recommended if you dont know what you are doing since it could be easyly abused)
fabulous questions… everything was vexed hoping better… anywayz thanks
Nice beneficial for me
HelpFul For me…thanx
Thanku very much for give me this ans.i find 10 ans only in this set in my interview.i like your thought.
this is awsome , mostly ask this question in PHP interview.
plzz tell me.. how to set error settings at runtime in php..??
Hi all,
Thanks Mizan, its a very useful kit for me.
Good!
This the best for get job for everyone
how to get sum of largest and second largest no of numeric array?
Excellent and very use full
excellent
thank you so much it helped in my interview
thanx boss
really very useful
excellent work… Thankz Mizan………..
why most of the peoples doing PHP ? but plenty of peoples don’t know abt PHP?
This is very helpful questions for me…
thanks alot…..
hai sir this is very nice for interview question
nice work
Thanks you lot
This definitely helps me much in recruiting job.
thanks a lot
It really goood job by MiZA…. it will be useful if u update the blog… since all the post are looking bit old….
Your questions and answers are really helpful to the ppl like me who wish to make a career as a PHP programmer.
Find out the 4th highest salary from a table by using mysql query?
thanks to provide php information
very nice work.
I got more information in php.
Thanks you…..
hi boss , my name is venkatesh , thank you for more information about interview questions, and can we expext online test in your site…?
really tooo good…pls share some video tutorial also!
Thanks for helping me. I never find this type of questions ever before.
It will definitly help me when I give interview on php. I was searching this type of questions. YOU stopped my searching.
Thanks
Write Some points about patterns matching in PHP.
PHP patterns matching questions are asked in now a days interviews.
i am new to php. Its really very use full for all php freshers. good work.
lot of thanks to you….
Really, its very use full questions.
Your question and Answers is very use full for every web developers.
Assalam o Alaikum
Got allot of knowledge by your work, stay blessed.
Hi Sir I am impressed for your profile,you have good knowledge in it field so sir please shares knowlege for me..in your profile.I visit your profile upto date..
Hi Genius,
The above interview question and answers is very useful to me…..
Thanks a lot………..
Really awesome Tut.Hope You will Add More Question at the end of the day.Nice Effort Keep It Up Mizanur Rahman.May Allah Bless You.May Allah increase ur knowledge
The PHP syntax is most similar to:
Perl and C
it’s really awesome
Hello everyone. Who knows where to get latches?..It should be
super
great work and value able effort.
what does php stands for?
Good Work
Thanks..
hello,
very good job
actually i know the oracle so plz tell me the difference between the oracle and mysql.
Divya
It’s realy very usefull.. thanx mizan thanx alot
very nice work …thanks!!!
Hi Rahman brother,
Thanks for posting interview questions.Its really a GREAT WORK………
Thank u Once again…..:)
helo,
can u suggest for me online project work for earn money reply me
very useful link for php and mysql beginners …Thanks
really really a great work!
thank you so much for this article
Nice set of questions..You have done a great work…thanks for this..
ThakX For that good suggestions
Good Contents !!!
Thanks.
Great Answers.
Following are some more questions…
http://php-tutorial-php.blogspot.com/2012/10/php-interview-questions-and-answers.html
Hi,
Above Help Are Great.
You can more get mysql interview questions & answers on :
http://www.webslike.com/Thread-MySql-Interview-Questions-Answers
It is truly a great and useful piece of information.
I’m happy that you shared this useful information with us. Please stay us up to date like this. Thank you for sharing.
thank Q..for giving best interview Q/A
wats the actual difference between PHP,JAVA,.NET
Really nice collection
A big thx to u…..It helps me a lot………:)
Difference between compiler and interpreter?
Both converts source code into machine language (binary data). compiler coverts program as a whole and stores in a text file and executes it. So less time consumption.
interpreter converts code line by line.
eypnhxgcehee
nice collection dude…!!!
Thanks.
Nyc site. . .it became very useful for us. . .
Great beat ! I would like to apprentice while you amend your website, how can i subscribe for a blog site?
The account aided me a acceptable deal. I had been tiny bit acquainted of this your broadcast
offered bright clear concept
thank you for giving the best interview question and answers, Really very nice
Can you make it a bit more simpler with practical examples???
Also most of the questions are repeated questions only…
Also can u give questions related to PHP syntax more??
Awesome work ,,,,, i just love it.. Thank you soooooooooooooooooooooo much….. Very help full..
very to use for freshers now……..
Nice Information.. it will be wonderfull if you can come up with PHP OOP question..
this is the best collection for freshers and also for experienced holder.
Can You Pls let me know how to write the optimized code in php and optimized queries in my sql?
what is the difference between cookie and session? and how it works?
Session:- 1) Session is created on Server-side.
2)This method is safe, because your data is stored on server side and hacker can’t hack your data.
3)Session is destoryed when you close your browser.
4)You can’t set the closing time for Session.
5) You hust create the Session_variable for your data to store in the session.
Cookies:- 1)Cookies is created on Client-side.
2)This method is not safe, because your data is stored on your own machine and hacker can hack your data.
3)Cookies is not destroyed even if you close the brwoser.You can open it within2-days.
4)You can set closing time for Cookies.
5) Cookies(name,value,time,path,domain)
Cookies(Gopal,123,time()+3600)
Here we create a cookie name=Gopal, Vlaue=123 and Time= 1 hour.
vry vry helps me sir
Hi sir, I likes so much your post and i wanna join your group m also a developer.
Gr8 set of Questions..
Hi Mizan,
check this out
http://web-developers-solution.blogspot.in/2011/09/php-interview-question-for-1-2-year.html
This guy copied everything as it is from here even ur name in examples 😀 poor guy
Hello friend’s i want some details about zend frame work can you help me ?
good information about php
awesome work bro really helfful for me.thanks
i have a mysql table in which iam trying to insert data from php using mysqli and an insert stored procedure.On the terminal the stored procedure works well and does the insert.why is it that in my php script it doesnot save the data into the database??it only enters the auto_increment id field and not the rest of the data??
Nice set of questions..You have done a great work…thanks for this.