One big difference between Drupal and the others I have looked at: Drupal has a...

One big difference between Drupal and the others I have looked at: Drupal has a "bootstrap" code that runs everything through it, while the others have a more traditional architecture of each function has its own php page with includes for header, footer, and other functions.

See original: One big difference between Drupal and the others I have looked at: Drupal has a...