PHP coding issues

[liedekef]

Some issues with the code:

1. To avoid a pass-by-reference warning in php 7, in the function addData the case-statement should be something like this (the "new" as a separate call):

        case QR_MODE_NUMBER :
	    $d = new QRNumber($data);
            $this->addDataImpl($d);
            break;

        case QR_MODE_ALPHA_NUM :
	    $d = new QRAlphaNum($data);
            $this->addDataImpl($d);
            break;

        case QR_MODE_8BIT_BYTE :
	    $d = new QR8BitByte($data);
            $this->addDataImpl($d);
            break;

        case QR_MODE_KANJI :
	    $d = new QRKanji($data);
            $this->addDataImpl($d);
            break;

2. When coding a string like https://my.url.site/events/?eme_check_attendance=1&eme_pmt_rndid=5c4ac78bdaef8_8a5fe7041234573e19e7f9db6ba4fe38
   I got an error:
   PHP Fatal error: code length overflow. (988]72) in qrcode.php on line 362
   (I find the 988 very weird, and the 72 very small). I use this as a call:
   $qr = QRCode::getMinimumQRCode($my_example_url,QR_ERROR_CORRECT_LEVEL_H);
   Is this a bug?