31. What are systems requirements for drupal installation ?
A minimum installation requires 15 Megabytes. 60 MB is needed for a website with many contributed modules and themes installed. Keep in mind you need much more for the database, files uploaded by the users, media, backups and other files.
Drupal 6: PHP 5.2.x only. Warning: support for PHP 4.x has been dropped. PHP 5.3 and later may produce errors or unexpected behaviour. Drupal 7: PHP 5.2.5 or higher (5.3 recommended). Drupal 8: PHP 5.4 or higher. More details about PHP requirements.