JpnForPhp\Helper\Helper::trim PHP Méthode

    public static function trim($str)
    {
        return preg_replace('/^[\\pZ\\pC]+|[\\pZ\\pC]+$/u', '', $str);
    }

 public function testTrim()
 {
     $result = Helper::trim("Kyōto‎");
     $this->assertEquals("Kyōto", $result);
 }