About PHP Programming Language
PHP : Hypertext Preprocessor is an open source server side scripting language. It is one of the most widely used web development Programming LanguageIn 1994 PHP was founded by Rasmus Lerdorf. At that time PHP's acronym is Personal Home Page and now it is called as Hypertext Preprocessor. PHP programs can be mixed with HTML,CSS,JavaScript etc..

Main areas where PHP scripts are used.
Server-side scripting : You can access the PHP program's output with a web browser, viewing the PHP page through the server. All these can run on your home machine if you are just installed the server software.

Command line scripting : You can make a PHP script to run it without any server or browser. You only need the PHP parser to use it this way. This type of usage is ideal for scripts regularly executed using cron (on *nix or Linux) or Task Scheduler (on Windows). These scripts can also be used for simple text processing tasks.

Writing desktop applications : PHP is probably not the very best language to create a desktop application with a graphical user interface, but if you know PHP very well, and would like to use some advanced PHP features in your client-side applications you can also use PHP-GTK to write such programs.

PHP developers can also integrate PHP with one of many different database tools like MySQL, SQLite, PostgreSQL, DB2, MS SQL, ORACLE, and so on

Major websites that use PHP are:
  • Facebook
  • Wikipedia
  • Flickr

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