/**
  * Init debug system
  * @param string $logPath path for debug log
  * @param int $logLevel level of debug is allowed from
  */
 public static function init($logPath, $logLevel = self::LVL_FATAL)
 {
     if (!is_null(self::$logFile)) {
         fclose(self::$logFile);
     }
     self::$logFile = fopen($logPath, 'ab');
     self::$logPath = $logPath;
     self::$logLevel = $logLevel;
     self::forcedInfo("------------------------------------------------------");
     self::forcedInfo("Debug log enabled, level: {$logLevel}");
 }