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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 5 times in this file.
| Line | Code |
|---|---|
| 241 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 242 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| 243 | if ( !current_user_can('moderate_comments') ) { |
| 244 | // Comment status should be moderated |
| 245 | self::$last_comment_result = '0'; |
| 246 | } |
| 247 | |
| 248 | if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 249 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 250 | do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] ); |
| 251 | } |
| 252 | |
| 253 | self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
| 254 | } |
| 255 | |
| 256 | // Delete old comments daily |
| 257 | if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) { |
| 258 | wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' ); |
| 259 | } |
| Line | Code |
| 742 | public static function cron_recheck() { |
| 743 | global $wpdb; |
| 744 | |
| 745 | $api_key = self::get_api_key(); |
| 746 | |
| 747 | $status = self::verify_key( $api_key ); |
| 748 | if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) { |
| 749 | // since there is currently a problem with the key, reschedule a check for 6 hours hence |
| 750 | wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' ); |
| 751 | do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status ); |
| 752 | return false; |
| 753 | } |
| 754 | |
| 755 | delete_option('akismet_available_servers'); |
| 756 | |
| 757 | $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" ); |
| 758 | |
| 759 | load_plugin_textdomain( 'akismet' ); |
| 760 | |
| Line | Code |
| 809 | // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL, |
| 810 | // send a moderation email now. |
| 811 | if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) { |
| 812 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 813 | wp_notify_moderator( $comment_id ); |
| 814 | } |
| 815 | |
| 816 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 817 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 818 | do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status ); |
| 819 | return; |
| 820 | } |
| 821 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 822 | } |
| 823 | |
| 824 | $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" ); |
| 825 | if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) { |
| 826 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 827 | do_action( 'akismet_scheduled_recheck', 'remaining' ); |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | public static function fix_scheduled_recheck() { |
| 832 | $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' ); |
| 833 | if ( !$future_check ) { |
| 834 | return; |
| 835 | } |
| 836 | |
| 837 | if ( get_option( 'akismet_alert_code' ) > 0 ) { |
| 838 | return; |
| 839 | } |
| 840 | |
| 841 | $check_range = time() + 1200; |
| 842 | if ( $future_check > $check_range ) { |
| 843 | wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' ); |
| 844 | wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' ); |
| 845 | do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' ); |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | public static function add_comment_nonce( $post_id ) { |
| 850 | /** |
| 851 | * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
| 852 | * and return any string value that is not 'true' or '' (empty string). |
| 853 | * |
| 854 | * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |