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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 |
|---|---|
| 289 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 290 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| 291 | if ( !current_user_can('moderate_comments') ) { |
| 292 | // Comment status should be moderated |
| 293 | self::$last_comment_result = '0'; |
| 294 | } |
| 295 | |
| 296 | if ( ! wp_next_scheduled( 'akismet_schedule_cron_recheck' ) ) { |
| 297 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 298 | do_action( 'akismet_scheduled_recheck', 'invalid-response-' . $response[1] ); |
| 299 | } |
| 300 | |
| 301 | self::$prevent_moderation_email_for_these_comments[] = $commentdata; |
| 302 | } |
| 303 | |
| 304 | // Delete old comments daily |
| 305 | if ( ! wp_next_scheduled( 'akismet_scheduled_delete' ) ) { |
| 306 | wp_schedule_event( time(), 'daily', 'akismet_scheduled_delete' ); |
| 307 | } |
| Line | Code |
| 892 | public static function cron_recheck() { |
| 893 | global $wpdb; |
| 894 | |
| 895 | $api_key = self::get_api_key(); |
| 896 | |
| 897 | $status = self::verify_key( $api_key ); |
| 898 | if ( get_option( 'akismet_alert_code' ) || $status == 'invalid' ) { |
| 899 | // since there is currently a problem with the key, reschedule a check for 6 hours hence |
| 900 | wp_schedule_single_event( time() + 21600, 'akismet_schedule_cron_recheck' ); |
| 901 | do_action( 'akismet_scheduled_recheck', 'key-problem-' . get_option( 'akismet_alert_code' ) . '-' . $status ); |
| 902 | return false; |
| 903 | } |
| 904 | |
| 905 | delete_option('akismet_available_servers'); |
| 906 | |
| 907 | $comment_errors = $wpdb->get_col( "SELECT comment_id FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error' LIMIT 100" ); |
| 908 | |
| 909 | load_plugin_textdomain( 'akismet' ); |
| 910 | |
| Line | Code |
| 959 | // If this comment has been pending moderation for longer than MAX_DELAY_BEFORE_MODERATION_EMAIL, |
| 960 | // send a moderation email now. |
| 961 | if ( ( intval( gmdate( 'U' ) ) - strtotime( $comment->comment_date_gmt ) ) < self::MAX_DELAY_BEFORE_MODERATION_EMAIL ) { |
| 962 | delete_comment_meta( $comment_id, 'akismet_delayed_moderation_email' ); |
| 963 | wp_notify_moderator( $comment_id ); |
| 964 | } |
| 965 | |
| 966 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 967 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 968 | do_action( 'akismet_scheduled_recheck', 'check-db-comment-' . $status ); |
| 969 | return; |
| 970 | } |
| 971 | delete_comment_meta( $comment_id, 'akismet_rechecking' ); |
| 972 | } |
| 973 | |
| 974 | $remaining = $wpdb->get_var( "SELECT COUNT(*) FROM {$wpdb->commentmeta} WHERE meta_key = 'akismet_error'" ); |
| 975 | if ( $remaining && !wp_next_scheduled('akismet_schedule_cron_recheck') ) { |
| 976 | wp_schedule_single_event( time() + 1200, 'akismet_schedule_cron_recheck' ); |
| 977 | do_action( 'akismet_scheduled_recheck', 'remaining' ); |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | public static function fix_scheduled_recheck() { |
| 982 | $future_check = wp_next_scheduled( 'akismet_schedule_cron_recheck' ); |
| 983 | if ( !$future_check ) { |
| 984 | return; |
| 985 | } |
| 986 | |
| 987 | if ( get_option( 'akismet_alert_code' ) > 0 ) { |
| 988 | return; |
| 989 | } |
| 990 | |
| 991 | $check_range = time() + 1200; |
| 992 | if ( $future_check > $check_range ) { |
| 993 | wp_clear_scheduled_hook( 'akismet_schedule_cron_recheck' ); |
| 994 | wp_schedule_single_event( time() + 300, 'akismet_schedule_cron_recheck' ); |
| 995 | do_action( 'akismet_scheduled_recheck', 'fix-scheduled-recheck' ); |
| 996 | } |
| 997 | } |
| 998 | |
| 999 | public static function add_comment_nonce( $post_id ) { |
| 1000 | /** |
| 1001 | * To disable the Akismet comment nonce, add a filter for the 'akismet_comment_nonce' tag |
| 1002 | * and return any string value that is not 'true' or '' (empty string). |
| 1003 | * |
| 1004 | * Don't return boolean false, because that implies that the 'akismet_comment_nonce' option |