hooks are drupal api code which allows module to interact with the Drupal core.
Drupal’s module system is based on the concept of “hooks”. A hook is a PHP function that is named foo_bar(), where “foo” is the name of the module (whose file name is thus foo.module) and “bar” is the name of the hook. Each hook has a defined set of parameters and call back functions to trigger functionality on specific event. For example if you use form with submit button, on submit event you can have specific functionality.
Drupal’s module system is based on the concept of “hooks”. A hook is a PHP function that is named foo_bar(), where “foo” is the name of the module (whose file name is thus foo.module) and “bar” is the name of the hook. Each hook has a defined set of parameters and call back functions to trigger functionality on specific event. For example if you use form with submit button, on submit event you can have specific functionality.
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