mult1mate\crontab\TaskManager::parseCrontab PHP Method

    public static function parseCrontab($cron, $task_class)
    {
        $cron_array = explode(PHP_EOL, $cron);
        $comment = null;
        $result = array();
        foreach ($cron_array as $c) {
            $c = trim($c);
            if (empty($c)) {
                continue;
            }
            $r = array($c);
            if (preg_match(self::CRON_LINE_REGEXP, $c, $matches)) {
                try {
                    CronExpression::factory($matches[2]);
                } catch (\Exception $e) {
                    $r[1] = 'Time expression is not valid';
                    $r[2] = $matches[2];
                    $result[] = $r;
                    continue;
                }
                $task = self::createTaskWithCrontabLine($task_class, $matches, $comment);
                $r[1] = 'Saved';
                $r[2] = $task;
                $comment = null;
            } elseif (preg_match('/#([\\w\\d\\s]+)/i', $c, $matches)) {
                $comment = trim($matches[1]);
                $r[1] = 'Comment';
                $r[2] = $comment;
            } else {
                $r[1] = 'Not matched';
            }
            $result[] = $r;
        }
        return $result;
    }

 public function parseCrontab()
 {
     if (isset($_POST['crontab'])) {
         $result = TaskManager::parseCrontab($_POST['crontab'], new Task());
         echo json_encode($result);
     }
 }