WordPress.org

1. fenix1987
   Member
   Posted 1 year ago #

   I encountered line of code below:
   add_action( 'posts_selection', 'cipnl_check_post' );

   and wondering when does posts_selection happen? I already did some research and did not find any useful information telling about it. hope someone can help me on this. Thanks!

2. fenix1987
   Member
   Posted 1 year ago #

   can anybody help? :(

3. GRAQ
   Member
   Posted 1 year ago #

   Sometimes you need to dig through the code a little:

   From http://adambrown.info/p/wp_hooks/hook/posts_selection?version=3.1&file=wp-includes/query.php

   // Announce current selection parameters.  For use by caching plugins.
   do_action( 'posts_selection', $where . $groupby . $orderby . $limits . $join );

4. fenix1987
   Member
   Posted 1 year ago #

   yeah, I've seen that one already. so that is executed every time a query is made? sorry as I didn't understand it much. Thanks for the response btw..

5. GRAQ
   Member
   Posted 1 year ago #

   Whenever do_action() is called, all the add_action()s get invoked.

   Imagine that you want to do X when Y happens. The core team have in their function the line do_action('y_has_happened', $with_this_data);

   You can write in your theme or plugin:
   

   add_action('y_has_happened', 'my_function_when_y_happens');
   function my_function_when_y_happens($happened_with_this_data){
     // Do X (with the data).
   }

   Hence them being 'hooks' they are points that allow theme/plugin writers to hook into that point.

6. fenix1987
   Member
   Posted 1 year ago #

   that makes sense now. Thanks a lot!

7. GRAQ
   Member
   Posted 1 year ago #

   Glad to help. Don't forget to mark the topic resolved :)

Topic Closed

This topic has been closed to new replies.