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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 |
|---|---|
| 771 | * Filters a comment's approval status before it is set. |
| 772 | * |
| 773 | * @since 2.1.0 |
| 774 | * @since 4.9.0 Returning a WP_Error value from the filter will shortcircuit comment insertion and |
| 775 | * allow skipping further processing. |
| 776 | * |
| 777 | * @param bool|string|WP_Error $approved The approval status. Accepts 1, 0, 'spam' or WP_Error. |
| 778 | * @param array $commentdata Comment data. |
| 779 | */ |
| 780 | $approved = apply_filters( 'pre_comment_approved', $approved, $commentdata ); |
| 781 | return $approved; |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * Hooks WP's native database-based comment-flood check. |
| 786 | * |
| 787 | * This wrapper maintains backward compatibility with plugins that expect to |
| 788 | * be able to unhook the legacy check_comment_flood_db() function from |
| 789 | * 'check_comment_flood' using remove_action(). |