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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 |
|---|---|
| 288 | |
| 289 | $comma_comment_ids = implode( ', ', array_map('intval', $comment_ids) ); |
| 290 | |
| 291 | $wpdb->query("DELETE FROM {$wpdb->comments} WHERE comment_id IN ( $comma_comment_ids )"); |
| 292 | $wpdb->query("DELETE FROM {$wpdb->commentmeta} WHERE comment_id IN ( $comma_comment_ids )"); |
| 293 | |
| 294 | clean_comment_cache( $comment_ids ); |
| 295 | } |
| 296 | |
| 297 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->comments ) ) // lucky number |
| 298 | $wpdb->query("OPTIMIZE TABLE {$wpdb->comments}"); |
| 299 | } |
| 300 | |
| 301 | public static function delete_old_comments_meta() { |
| 302 | global $wpdb; |
| 303 | |
| 304 | $interval = apply_filters( 'akismet_delete_commentmeta_interval', 15 ); |
| 305 | |
| 306 | # enfore a minimum of 1 day |
| Line | Code |
| 315 | return; |
| 316 | |
| 317 | $wpdb->queries = array(); |
| 318 | |
| 319 | foreach ( $comment_ids as $comment_id ) { |
| 320 | delete_comment_meta( $comment_id, 'akismet_as_submitted' ); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | if ( apply_filters( 'akismet_optimize_table', ( mt_rand(1, 5000) == 11), $wpdb->commentmeta ) ) // lucky number |
| 325 | $wpdb->query("OPTIMIZE TABLE {$wpdb->commentmeta}"); |
| 326 | } |
| 327 | |
| 328 | // how many approved comments does this author have? |
| 329 | public static function get_user_comments_approved( $user_id, $comment_author_email, $comment_author, $comment_author_url ) { |
| 330 | global $wpdb; |
| 331 | |
| 332 | if ( !empty( $user_id ) ) |
| 333 | return (int) $wpdb->get_var( $wpdb->prepare( "SELECT COUNT(*) FROM {$wpdb->comments} WHERE user_id = %d AND comment_approved = 1", $user_id ) ); |