Also:
  • xhtml coding (clean code based on layers and w3c standartds)
  • css styles
  • JavaScript client-side programming
  • PHP programming (writing code from scratch, correction/improvement of existing projects, work with text, regular expressions, work with Data Bases, OOP including PHP5, Sessions and Cookies, PDO, GDLib and a lot more!)
  • Content management systems: Joomla!, Drupal, TextPattern, PHPMyDirectory
  • Templates: Smarty, phpTemplate
  • MySQL database administration