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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 |
|---|---|
| 408 | return; |
| 409 | |
| 410 | $wpdb->queries = array(); |
| 411 | |
| 412 | foreach ( $comment_ids as $comment_id ) { |
| 413 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 414 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 415 | } |
| 416 | |
| 417 | do_action( 'akismet_delete_commentmeta_batch', count( $comment_ids ) ); |
| 418 | } |
| 419 | |
| 420 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 421 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 422 | } |
| 423 | |
| 424 | // Clear out comments meta that no longer have corresponding comments in the database |
| 425 | public static function delete_orphaned_commentmeta() { |
| 426 | global $wpdb; |
| Line | Code |
| 441 | if ( 'akismet_' == substr( $commentmeta->meta_key, 0, 8 ) ) { |
| 442 | delete_comment_meta( $commentmeta->comment_id, $commentmeta->meta_key ); |
| 443 | do_action( 'akismet_batch_delete_count', __FUNCTION__ ); |
| 444 | $commentmeta_deleted++; |
| 445 | } |
| 446 | |
| 447 | $last_meta_id = $commentmeta->meta_id; |
| 448 | } |
| 449 | |
| 450 | do_action( 'akismet_delete_commentmeta_batch', $commentmeta_deleted ); |
| 451 | |
| 452 | // If we're getting close to max_execution_time, quit for this round. |
| 453 | if ( microtime(true) - $start_time > $max_exec_time ) |
| 454 | return; |
| 455 | } |
| 456 | |
| 457 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 458 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 459 | } |