[wp-trac] [WordPress Trac] #35357: Introduce did_filter()

[WordPress Trac]

#35357: Introduce did_filter()
-------------------------+-----------------------------
 Reporter:  mordauk      |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Plugins      |    Version:  trunk
 Severity:  normal       |   Keywords:
  Focuses:               |
-------------------------+-----------------------------
 I think there should a `did_filter( $tag )` function that mimics the
 existing `did_action( $tag )` function.

 While actions and filters are pretty much the same thing, it turns out
 that you can't actually use `did_action()` to detect when a filter has
 been run.

 {{{
 function did_filter( $tag = '' ) {
     global $wp_filter;

     if ( ! isset( $wp_filter[ $tag ] ) ) {
         return 0;
     }

     return $wp_filter[ $tag ];
 }
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/35357>
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