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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.
| Line | Code |
|---|---|
| 267 | */ |
| 268 | $delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 ); |
| 269 | $delete_limit = max( 1, intval( $delete_limit ) ); |
| 270 | |
| 271 | /** |
| 272 | * Determines how many days a comment will be left in the Spam queue before being deleted. |
| 273 | * |
| 274 | * @param int The default number of days. |
| 275 | */ |
| 276 | $delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 ); |
| 277 | $delete_interval = max( 1, intval( $delete_interval ) ); |
| 278 | |
| 279 | while ( $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_id FROM {$wpdb->comments} WHERE DATE_SUB(NOW(), INTERVAL %d DAY) > comment_date_gmt AND comment_approved = 'spam' LIMIT %d", $delete_interval, $delete_limit ) ) ) { |
| 280 | if ( empty( $comment_ids ) ) |
| 281 | return; |
| 282 | |
| 283 | $wpdb->queries = array(); |
| 284 | |
| 285 | foreach ( $comment_ids as $comment_id ) { |