PHP Interview Questions & Answers

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PHP Interview Questions - Part 1
  • Question 01 :- What is PHP?
  • Question 02 :- Advantages of using PHP?
  • Question 03 :- What are popular frameworks in PHP?
  • Question 04 :- What are popular Content Management System (CMS) in PHP?
  • Question 05 :- What is the difference between "echo" and "print" in PHP?
  • Question 06 :- How a variable is declared in PHP?
  • Question 07 :- What is the difference between $message and $$message?
  • Question 08 :- How to write JavaScript in PHP?
  • Question 09 :- How show Javascript alert with PHP variable?
  • Question 10 :- What is the difference between JavaScript and PHP?
  • Question 11 :- How to show PHP errors on the same page?
  • Question 12 :- What is the most used method for hashing passwords in PHP?
  • Question 13 :- What are the different types of Array in PHP?
  • Question 14 :- What is the Purpose of @ in PHP?
  • Question 15 :- What are the different types of variables present in PHP?
  • Question 16 :- How does the 'foreach' loop work in PHP?
  • Question 17 :- What is the use of session_start() and session_destroy() function in PHP?
  • Question 18 :- What are the different ways of handling the result set of MySQLi in PHP?
  • Question 19 :- What are magic constants in PHP?
  • Question 20 :- What are the different loops in PHP?
PHP Interview Questions - Part 2
  • Question 21 :- Explain some of the PHP string functions?
  • Question 22 :- How we can define a static function in class and what are uses?
  • Question 23 :- What is the exact difference between explode and implode?
  • Question 24 :- Difference between $_POSTand $_REQUEST?
  • Question 25 :- How we can change the response header?
PHP Interview Questions - Part 3
  • Question 26 :- What are the steps to create a new database using MySQL and PHP?
  • Question 27 :- What is htaccess ? Why do we use it and where?
  • Question 28 :- Whare the constructor and destructor in PHP?
  • Question 29 :- Is multiple inheritance is supported by PHP?
  • Question 30 :- How to increase the execution time of PHP Script?
PHP Interview Questions - Part 4
  • Question 31 :- How to add 301 redirects in PHP?
  • Question 32 :- Difference between include() and require() ?
  • Question 33 :- What is the difference between "==" and "===" in PHP ?
  • Question 34 :- How to register a variable in PHP Session ?

PHP Interview Questions - Part 5

  • Question 35 :- What is the use of imagetypes() function?
  • Question 36 :- Which method is used to check the data type of any variable?
  • Question 37 :- Which method is used to count the total number of rows returned by any query?
  • Question 38 :- Which function you can use to open a file from a folder?
  • Question 39 :- Which function is used to delete a file from a folder?
  • Question 40 :- What is the use of strip_tags() method?

PHP Interview Questions - Part 6

  • Question 41 :- What is a Lambda function in PHP?
  • Question 42 :- What is Overloading and Overriding in PHP?
  • Question 43 :- What is the static variable in function useful for?
  • Question 44 :- How can we define a variable accessible in functions of a PHP script?
  • Question 45 :-How is a constant defined in a PHP script ?

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