Filter api

API

• hook_filter_info
  http://api.drupal.org/api/drupal/modules!filter!filter.api.php/function/hook_filter_info/7
  Define the new input filter. We should define the callback function used in this filter which are several

'prepare callback' => '_filter_example_filter_time_prepare',
'process callback' => '_filter_example_filter_time_process',
'tips callback' => '_filter_example_filter_time_tips',

Example asset module https://gist.github.com/1cc86c91caf877f2d43b
Example example module https://gist.github.com/8717b18592c45d4cd1f8

HOOKS