PHP
PHP is a script language and interpreter that
is freely available and used primarily on Linux
Web servers. PHP, originally derived from Personal
Home Page Tools, now stands for PHP: Hypertext Preprocessor,
which the PHP FAQ describes as a "recursive acronym."
Basic HTML,Essentials of PHP
Operators and Flow Controls
String and Array, Creating Functions
Reading data in web pages
Working with databases (PostgreSQL)
Web techniques, File Handling