original_string: public static function random($length = 6, $pool = self::RANDOM_POOL)
  	{
  		return substr(str_shuffle(str_repeat($pool, 5)), 0, $length);
  	}
code: public static function random($length = 6, $pool = self::RANDOM_POOL)
  	{
  		return substr(str_shuffle(str_repeat($pool, 5)), 0, $length);
  	}
code_tokens: public static function random ( $ length = 6 , $ pool = self :: RANDOM_POOL ) { return substr ( str_shuffle ( str_repeat ( $ pool , 5 ) ) , 0 , $ length ) ; }
docstring: Make a random string.
  
  @param int    $length
  @param string $pool
  @return string
docstring_tokens: Make a random string .