Top 210+ PHP Interview Questions and Answers in 2023

PHP (Hypertext Preprocessor) is a open source programming language. It was created by Rasmus Lerdorf in 1994 for dynamic, interactive websites.

Used

1-Cross platform or Platform Independent-Most php code can be processed without alteration on computers running many different operating systems.Example- A PHP script that run on linux generally also runs well on windows.
2-HTML embeded-PHP code can be written in files containing a mixture of php instructions and HTML code.
3-Server side-The PHP program are run on a server specifically a webserver.
4-Webscripting language-PHP program run via a webbrowser.

Advantage
1)-PHP is open source and free of cost. 
2)-PHP is platform independent & applications can run on any Operating system like UNIX, Linux, Mac and Windows, etc. 
3)-It is more stable.
4)-It has powerful library support to use various function modules for data representation. 
5)-PHP application can easily be loaded & connected to database.

Disadvantage
1)-It is not secure because it is open source.
2)-It is losely data type language.
3)-Not suitable for giant web application development.
4)-Poor framework
5)-Poor performance