Eccube\Tests\Service\PluginServiceTest::createTempDir PHP Method

    private function createTempDir()
    {
        $t = sys_get_temp_dir() . "/plugintest." . sha1(mt_rand());
        if (!mkdir($t)) {
            throw new \Exception("{$t} " . $php_errormsg);
        }
        return $t;
    }