WordPress:Function Reference/apply filters
来自站长百科
Description
Call the functions added to a filter hook. See the WordPress:Plugin API for a list of filter hooks.
The callback functions attached to filter hook $tag are invoked by calling this function. This function can be used to create a new filter hook by simply calling this function with the name of the new hook specified using the $tag parameter.
Usage
%%% <?php apply_filters($tag, $string); ?> %%%
Parameters
Return
(string) The text in $string after all hooked functions are applied to it.