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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 |
|---|---|
| 265 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 266 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| 267 | if ( !current_user_can('moderate_comments') ) { |
| 268 | // Comment status should be moderated |
| 269 | self::$last_comment_result = '0'; |
| 270 | } |
| 271 | |
| 272 | if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 273 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 274 | do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] ); |
| 275 | } |
| 276 | |
| 277 | self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
| 278 | } |
| 279 | |
| 280 | // Delete old comments daily |
| 281 | if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) { |
| 282 | wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' ); |
| 283 | } |
| Line | Code |
| 832 | public static function cron_recheck() { |
| 833 | global $wpdb; |
| 834 | |
| 835 | $api_key = self::get_api_key(); |
| 836 | |
| 837 | $status = self::verify_key( $api_key ); |
| 838 | if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) { |
| 839 | // since there is currently a problem with the key, reschedule a check for 6 hours hence |
| 840 | wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' ); |
| 841 | do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status ); |
| 842 | return false; |
| 843 | } |
| 844 | |
| 845 | delete_option('akismet_available_servers'); |
| 846 | |
| 847 | $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" ); |
| 848 | |
| 849 | load_plugin_textdomain( 'akismet' ); |
| 850 | |
| Line | Code |
| 899 | // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL, |
| 900 | // send a moderation email now. |
| 901 | if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) { |
| 902 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 903 | wp_notify_moderator( $comment_id ); |
| 904 | } |
| 905 | |
| 906 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 907 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 908 | do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status ); |
| 909 | return; |
| 910 | } |
| 911 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 912 | } |
| 913 | |
| 914 | $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" ); |
| 915 | if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) { |
| 916 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 917 | do_action( 'akismet_scheduled_recheck', 'remaining' ); |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | public static function fix_scheduled_recheck() { |
| 922 | $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' ); |
| 923 | if ( !$future_check ) { |
| 924 | return; |
| 925 | } |
| 926 | |
| 927 | if ( get_option( 'akismet_alert_code' ) > 0 ) { |
| 928 | return; |
| 929 | } |
| 930 | |
| 931 | $check_range = time() + 1200; |
| 932 | if ( $future_check > $check_range ) { |
| 933 | wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' ); |
| 934 | wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' ); |
| 935 | do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' ); |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | public static function add_comment_nonce( $post_id ) { |
| 940 | /** |
| 941 | * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
| 942 | * and return any string value that is not 'true' or '' (empty string). |
| 943 | * |
| 944 | * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |