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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 |
|---|---|
| 422 | |
| 423 | $wpdb->queries = array(); |
| 424 | |
| 425 | $comments = array(); |
| 426 | |
| 427 | foreach ( $comment_ids as $comment_id ) { |
| 428 | $comments[ $comment_id ] = get_comment( $comment_id ); |
| 429 | |
| 430 | do_action( 'delete_comment', $comment_id, $comments[ $comment_id ] ); |
| 431 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 432 | } |
| 433 | |
| 434 | // Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
| 435 | $format_string = implode( ", ", array_fill( 0, count( $comment_ids ), '%s' ) ); |
| 436 | |
| 437 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 438 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 439 | |
| 440 | foreach ( $comment_ids as $comment_id ) { |
| Line | Code |
| 464 | // after $interval days regardless of the comment status |
| 465 | 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 ) ) ) { |
| 466 | if ( empty( $comment_ids ) ) |
| 467 | return; |
| 468 | |
| 469 | $wpdb->queries = array(); |
| 470 | |
| 471 | foreach ( $comment_ids as $comment_id ) { |
| 472 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 473 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 474 | } |
| 475 | |
| 476 | do_action( 'akismet_delete_commentmeta_batch', count( $comment_ids ) ); |
| 477 | } |
| 478 | |
| 479 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 480 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 481 | } |
| 482 | |
| Line | Code |
| 493 | return; |
| 494 | |
| 495 | $wpdb->queries = array(); |
| 496 | |
| 497 | $commentmeta_deleted = 0; |
| 498 | |
| 499 | foreach ( $commentmeta_results as $commentmeta ) { |
| 500 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 501 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 502 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 503 | $commentmeta_deleted++; |
| 504 | } |
| 505 | |
| 506 | $last_meta_id = $commentmeta->meta_id; |
| 507 | } |
| 508 | |
| 509 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 510 | |
| 511 | // If we're getting close to max_execution_time, quit for this round. |