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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
730 | * Possible hook names include: |
731 | * |
732 | * - `manage_post_posts_columns` |
733 | * - `manage_page_posts_columns` |
734 | * |
735 | * @since 3.0.0 |
736 | * |
737 | * @param string[] $post_columns An associative array of column headings. |
738 | */ |
739 | return apply_filters( "manage_{$post_type}_posts_columns", $posts_columns ); |
740 | } |
741 |
|
742 | /** |
743 | * @return array |
744 | */ |
745 | protected function get_sortable_columns() { |
746 | return array( |
747 | 'title' => 'title', |
748 | 'parent' => 'parent', |