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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 |
---|---|
741 | * Possible hook names include: |
742 | * |
743 | * - `manage_post_posts_columns` |
744 | * - `manage_page_posts_columns` |
745 | * |
746 | * @since 3.0.0 |
747 | * |
748 | * @param string[] $post_columns An associative array of column headings. |
749 | */ |
750 | return apply_filters( "manage_{$post_type}_posts_columns", $posts_columns ); |
751 | } |
752 |
|
753 | /** |
754 | * @return array |
755 | */ |
756 | protected function get_sortable_columns() { |
757 | return array( |
758 | 'title' => 'title', |
759 | 'parent' => 'parent', |