在my theme的函数中添加了以下内容。php：

define(\'WPMS_DELAY\', 5);  // Run the below cron task every X minutes
define(\'WPMS_OPTION\', \'wp_missed_schedule\');

function wpms_replacements_deactivate() {
    delete_option(WPMS_OPTION);
}
register_deactivation_hook(__FILE__, \'wpms_replacements_deactivate\');

// Run the following code on every request
function wpms_init() {
    remove_action(\'publish_future_post\', \'check_and_publish_future_post\');
    $last = get_option(WPMS_OPTION, false);

    // Exit here if less than WPMS_DELAY minutes has passed since we last ran
    if (($last !== false) && ($last > (time() - (WPMS_DELAY * 60))))
        return;

    // Find all posts whose scheduled time has passed and publish them
    update_option(WPMS_OPTION, time());
    global $wpdb;
    $scheduledIDs = $wpdb->get_col("
        SELECT `ID` FROM `{$wpdb->posts}`
        WHERE (
          ((`post_date` > 0) && (`post_date` <= CURRENT_TIMESTAMP()))
          OR ((`post_date_gmt` > 0) && (`post_date_gmt` <= UTC_TIMESTAMP()))
        )
        AND `post_status` = \'future\'
        LIMIT 0, 10
    ");
    if (!count($scheduledIDs)) 
      return;
    foreach ($scheduledIDs as $scheduledID) {
        if (!$scheduledID) continue;
        wp_publish_post($scheduledID);
    }
}    
add_action(\'init\', \'wpms_init\', 0)