has_action Wordpress function


Description:

Check if any action has been registered for a hook.


Syntax:


Arguments:

(string) $tag The name of the action hook.
(callback) $function_to_check optional.


Return Type:

(mixed) If $function_to_check is omitted, returns boolean for whether the hook has anything registered. When checking a specific function, the priority of that hook is returned, or false if the function is not attached. When using the $function_to_check argument, this function may return a non-boolean value that evaluates to false (e.g.) 0, so use the === operator for testing the return value.


Define At:

wp-includes/plugin.php


Wordpress Reference URL:

http://codex.wordpress.org/Function_Reference/has_action


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