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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 |
|---|---|
| 581 | return; |
| 582 | |
| 583 | $wpdb->queries = array(); |
| 584 | |
| 585 | foreach ( $comment_ids as $comment_id ) { |
| 586 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 587 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 588 | } |
| 589 | |
| 590 | do_action( 'akismet_delete_commentmeta_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 ); |
| 591 | } |
| 592 | |
| 593 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 594 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 595 | } |
| 596 | |
| 597 | // Clear out comments meta that no longer have corresponding comments in the database |
| 598 | public static function delete_orphaned_commentmeta() { |
| 599 | global $wpdb; |
| Line | Code |
| 614 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 615 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 616 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 617 | $commentmeta_deleted++; |
| 618 | } |
| 619 | |
| 620 | $last_meta_id = $commentmeta->meta_id; |
| 621 | } |
| 622 | |
| 623 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 624 | |
| 625 | // If we're getting close to max_execution_time, quit for this round. |
| 626 | if ( microtime(true) - $start_time > $max_exec_time ) |
| 627 | return; |
| 628 | } |
| 629 | |
| 630 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 631 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 632 | } |