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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 3 times in this file.
| Line | Code |
|---|---|
| 471 | |
| 472 | $wpdb->queries = array(); |
| 473 | |
| 474 | $comments = array(); |
| 475 | |
| 476 | foreach ( $comment_ids as $comment_id ) { |
| 477 | $comments[ $comment_id ] = get_comment( $comment_id ); |
| 478 | |
| 479 | do_action( 'delete_comment', $comment_id, $comments[ $comment_id ] ); |
| 480 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 481 | } |
| 482 | |
| 483 | // Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
| 484 | $format_string = implode( ', ', array_fill( 0, is_countable( $comment_ids ) ? count( $comment_ids ) : 0, '%s' ) ); |
| 485 | |
| 486 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 487 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 488 | |
| 489 | foreach ( $comment_ids as $comment_id ) { |
| Line | Code |
| 513 | // after $interval days regardless of the comment status |
| 514 | while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT m.comment_id FROM {$wpdb->commentmeta} as m INNER JOIN {$wpdb->comments} as c USING(comment_id) WHERE m.meta_key = 'akismet_as_submitted' AND DATE_SUB(NOW(), INTERVAL %d DAY) > c.comment_date_gmt LIMIT 10000", $interval ) ) ) { |
| 515 | if ( empty( $comment_ids ) ) |
| 516 | return; |
| 517 | |
| 518 | $wpdb->queries = array(); |
| 519 | |
| 520 | foreach ( $comment_ids as $comment_id ) { |
| 521 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 522 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 523 | } |
| 524 | |
| 525 | do_action( 'akismet_delete_commentmeta_batch', is_countable( $comment_ids ) ? count( $comment_ids ) : 0 ); |
| 526 | } |
| 527 | |
| 528 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 529 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 530 | } |
| 531 | |
| Line | Code |
| 542 | return; |
| 543 | |
| 544 | $wpdb->queries = array(); |
| 545 | |
| 546 | $commentmeta_deleted = 0; |
| 547 | |
| 548 | foreach ( $commentmeta_results as $commentmeta ) { |
| 549 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 550 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 551 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 552 | $commentmeta_deleted++; |
| 553 | } |
| 554 | |
| 555 | $last_meta_id = $commentmeta->meta_id; |
| 556 | } |
| 557 | |
| 558 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 559 | |
| 560 | // If we're getting close to max_execution_time, quit for this round. |