During some development work I had to create a custom node template for a specific content type. The design had a menu block displayed on left sidebar on the majority of pages but the menu was also needed below the content area as a secondary navigation for this content type.
PHP is a server-side scripting language for creating dynamic web pages. It is widely used to write web applications and is probably one of the most popular scripting languages used today.

Converting Drupal 5 Themes to Drupal 6
Drupal 7 is maturing and should have an official release before the end of this year. Once there is an official release support for Drupal 5 will stop. So if you have a Drupal 5 site and haven't upgraded now is the time to do it.