Building applications, in real time, and generating new websites can be done using a PHP programming language script. This script is widely used because you can write programs working in graphical mode, create scripts on the web server side, and process data from the command line. PHP scripts are placed in text files, thanks to which PHP is similar to the less and less used mechanism called Server Side Includes, which was created for dynamic page generation. The PHP script functionality has been divided into four kernel modules, the official one, the PECL repository and the PEAR repository, which differ in their accessibility to the programmer.