Method _verifyResponse

/**
 * Verify the response code from the server and log response if flag is set
 *
 * @param   mixed  $expected  Integer response code or array of integer response codes
 *
 * @return  boolean  True if response code from the server is expected
 *
 * @since   1.5
 */
protected function _verifyResponse($expected)
{
    $parts = null;
    // Wait for a response from the server, but timeout after the set time limit
    $endTime = time() + $this->_timeout;
    $this->_response = '';
    do {
        $this->_response .= fgets($this->_conn, 4096);
    } while (!preg_match('/^([0-9]{3})(-(.*' . CRLF . ')+\\1)? [^' . CRLF . ']+' . CRLF . "\$/", $this->_response, $parts) && time() < $endTime);
    // Catch a timeout or bad response
    if (!isset($parts[1])) {
        Log::add(Text::sprintf('JLIB_CLIENT_ERROR_FTP_TIMEOUT', __METHOD__, $this->_response), Log::WARNING, 'jerror');
        return false;
    }
    // Separate the code from the message
    $this->_responseCode = $parts[1];
    $this->_responseMsg = $parts[0];
    // Did the server respond with the code we wanted?
    if (\is_array($expected)) {
        if (\in_array($this->_responseCode, $expected)) {
            $retval = true;
        } else {
            $retval = false;
        }
    } else {
        if ($this->_responseCode == $expected) {
            $retval = true;
        } else {
            $retval = false;
        }
    }
    return $retval;
}