yii\web\Request::resolvePathInfo PHP Method

    protected function resolvePathInfo()
    {
        $pathInfo = $this->getUrl();
        if (($pos = strpos($pathInfo, '?')) !== false) {
            $pathInfo = substr($pathInfo, 0, $pos);
        }
        $pathInfo = urldecode($pathInfo);
        // try to encode in UTF8 if not so
        // http://w3.org/International/questions/qa-forms-utf-8.html
        if (!preg_match('%^(?:
            [\\x09\\x0A\\x0D\\x20-\\x7E]              # ASCII
            | [\\xC2-\\xDF][\\x80-\\xBF]             # non-overlong 2-byte
            | \\xE0[\\xA0-\\xBF][\\x80-\\xBF]         # excluding overlongs
            | [\\xE1-\\xEC\\xEE\\xEF][\\x80-\\xBF]{2}  # straight 3-byte
            | \\xED[\\x80-\\x9F][\\x80-\\xBF]         # excluding surrogates
            | \\xF0[\\x90-\\xBF][\\x80-\\xBF]{2}      # planes 1-3
            | [\\xF1-\\xF3][\\x80-\\xBF]{3}          # planes 4-15
            | \\xF4[\\x80-\\x8F][\\x80-\\xBF]{2}      # plane 16
            )*$%xs', $pathInfo)) {
            $pathInfo = utf8_encode($pathInfo);
        }
        $scriptUrl = $this->getScriptUrl();
        $baseUrl = $this->getBaseUrl();
        if (strpos($pathInfo, $scriptUrl) === 0) {
            $pathInfo = substr($pathInfo, strlen($scriptUrl));
        } elseif ($baseUrl === '' || strpos($pathInfo, $baseUrl) === 0) {
            $pathInfo = substr($pathInfo, strlen($baseUrl));
        } elseif (isset($_SERVER['PHP_SELF']) && strpos($_SERVER['PHP_SELF'], $scriptUrl) === 0) {
            $pathInfo = substr($_SERVER['PHP_SELF'], strlen($scriptUrl));
        } else {
            throw new InvalidConfigException('Unable to determine the path info of the current request.');
        }
        if (substr($pathInfo, 0, 1) === '/') {
            $pathInfo = substr($pathInfo, 1);
        }
        return (string) $pathInfo;
    }

 public function resolvePathInfo()
 {
     if ($this->getUrl() === $this->adminUrl) {
         return "";
     } else {
         return parent::resolvePathInfo();
     }
 }