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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 775 | } |
| 776 | |
| 777 | $wpdb->queries = array(); |
| 778 | |
| 779 | foreach ( $comment_ids as $comment_id ) { |
| 780 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 781 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 782 | } |
| 783 | |
| 784 | do_action( 'akismet_delete_commentmeta_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 ); |
| 785 | } |
| 786 | |
| 787 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number |
| 788 | $wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" ); |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | // Clear out comments meta that no longer have corresponding comments in the database |
| 793 | public static function delete_orphaned_commentmeta() { |
| Line | Code |
| 810 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 811 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 812 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 813 | ++$commentmeta_deleted; |
| 814 | } |
| 815 | |
| 816 | $last_meta_id = $commentmeta->meta_id; |
| 817 | } |
| 818 | |
| 819 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 820 | |
| 821 | // If we're getting close to max_execution_time, quit for this round. |
| 822 | if ( microtime( true ) - $start_time > $max_exec_time ) { |
| 823 | return; |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand( 1, 5000 ) == 11 ), $wpdb->commentmeta ) ) { // lucky number |
| 828 | $wpdb->query( "OPTIMIZE TABLE {$wpdb->commentmeta}" ); |