QRCode.class.php
public function get($iSize = 150, $sECLevel = 'L', $iMargin = 1)
    {
        return self::API_URL . $iSize . 'x' . $iSize . '&cht=qr&chld=' . $sECLevel . '|' . $iMargin . '&chl=' . $this->sData;
    }
public function get($iSize = 150, $sECLevel = 'L', $iMargin = 1)
    {
        return self::API_URL . $iSize . 'x' . $iSize . '&cht=qr&chld=' . $sECLevel . '|' . $iMargin . '&chl=' . $this->sData;
    }
Get the URL of QR Code.

@param integer $iSize Default 150
@param string $sECLevel Default L
@param integer $iMargin Default 1

@return string The API URL configure.