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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 |
---|---|
816 | * |
817 | * @since 2.1.0 |
818 | * @since 4.9.0 Returning a WP_Error value from the filter will short-circuit comment insertion |
819 | * and allow skipping further processing. |
820 | * |
821 | * @param int|string|WP_Error $approved The approval status. Accepts 1, 0, 'spam', 'trash', |
822 | * or WP_Error. |
823 | * @param array $commentdata Comment data. |
824 | */ |
825 | return apply_filters( 'pre_comment_approved', $approved, $commentdata ); |
826 | } |
827 |
|
828 | /** |
829 | * Hooks WP's native database-based comment-flood check. |
830 | * |
831 | * This wrapper maintains backward compatibility with plugins that expect to |
832 | * be able to unhook the legacy check_comment_flood_db() function from |
833 | * 'check_comment_flood' using remove_action(). |
834 | * |