PHP

PHP is a very populair server-side programming language. PHP used to stand for “personal home page” but nowadays it is a self-recursive acronym: “PHP: Hypertext Preprocessor”.

PHP is used in combination with HTML, but is also very often used with MySQL and JavaScript (AJAX).

In order to use php it must be installed on your webserver. The newest version is php 5, but most webservers run older versions, so not all functions declared in our tutorials might work.

Files using PHP must have the .php extension and php code must be between <?php and ?> tags.