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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 |
|---|---|
| 395 | |
| 396 | public static function delete_old_comments() { |
| 397 | global $wpdb; |
| 398 | |
| 399 | /** |
| 400 | * Determines how many comments will be deleted in each batch. |
| 401 | * |
| 402 | * @param int The default, as defined by AKISMET_DELETE_LIMIT. |
| 403 | */ |
| 404 | $delete_limit = apply_filters( 'akismet_delete_comment_limit', defined( 'AKISMET_DELETE_LIMIT' ) ? AKISMET_DELETE_LIMIT : 10000 ); |
| 405 | $delete_limit = max( 1, intval( $delete_limit ) ); |
| 406 | |
| 407 | /** |
| 408 | * Determines how many days a comment will be left in the Spam queue before being deleted. |
| 409 | * |
| 410 | * @param int The default number of days. |
| 411 | */ |
| 412 | $delete_interval = apply_filters( 'akismet_delete_comment_interval', 15 ); |
| 413 | $delete_interval = max( 1, intval( $delete_interval ) ); |