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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 |
|---|---|
| 350 | // Prepared as strings since comment_id is an unsigned BIGINT, and using %d will constrain the value to the maximum signed BIGINT. |
| 351 | $format_string = implode( ", ", array_fill( 0, count( $comment_ids ), '%s' ) ); |
| 352 | |
| 353 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->comments} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 354 | $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( " . $format_string . " )", $comment_ids ) ); |
| 355 | |
| 356 | clean_comment_cache( $comment_ids ); |
| 357 | } |
| 358 | |
| 359 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number |
| 360 | $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}"); |
| 361 | } |
| 362 | |
| 363 | public static function delete_old_comments_meta() { |
| 364 | global $wpdb; |
| 365 | |
| 366 | $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 ); |
| 367 | |
| 368 | # enfore a minimum of 1 day |
| Line | Code |
| 377 | return; |
| 378 | |
| 379 | $wpdb->queries = array(); |
| 380 | |
| 381 | foreach ( $comment_ids as $comment_id ) { |
| 382 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 387 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 388 | } |
| 389 | |
| 390 | // how many approved comments does this author have? |
| 391 | public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) { |
| 392 | global $wpdb; |
| 393 | |
| 394 | if ( !empty( $user_id ) ) |
| 395 | return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) ); |