Drupal coding tricks

Drupal 6 pages can contain PHP code. You can write your own add on modules for Drupal. I will add some code examples here in answer to the common questions I am asked by Drupal users writing their first code for Drupal.

• An unrecoverable error occurred. The uploaded file likely exceeded the maximum file size (8 MB) that this server supports.
  

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• How to carry data from one page to another using sessions
  

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