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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 |
|---|---|
| 463 | return; |
| 464 | |
| 465 | $wpdb->queries = array(); |
| 466 | |
| 467 | foreach ( $comment_ids as $comment_id ) { |
| 468 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 469 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 470 | } |
| 471 | |
| 472 | do_action( 'akismet_delete_commentmeta_batch', count( $comment_ids ) ); |
| 473 | } |
| 474 | |
| 475 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 476 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 477 | } |
| 478 | |
| 479 | // Clear out comments meta that no longer have corresponding comments in the database |
| 480 | public static function delete_orphaned_commentmeta() { |
| 481 | global $wpdb; |
| Line | Code |
| 496 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 497 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 498 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 499 | $commentmeta_deleted++; |
| 500 | } |
| 501 | |
| 502 | $last_meta_id = $commentmeta->meta_id; |
| 503 | } |
| 504 | |
| 505 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 506 | |
| 507 | // If we're getting close to max_execution_time, quit for this round. |
| 508 | if ( microtime(true) - $start_time > $max_exec_time ) |
| 509 | return; |
| 510 | } |
| 511 | |
| 512 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 513 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 514 | } |