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<?php |
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namespace vansales; |
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require_once './vendor/autoload.php'; |
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use Endroid\QrCode\QrCode; |
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class ScbQr{ |
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const RELEASE_VERSION_OF_QR = '000201'; |
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const INITIAL_METHOD_OF_QR = '010212'; |
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const SCB_PAYMENT_CODE = '0016A000000677010112'; |
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const SCB_REFERENCE_CODE = '0706SCB001'; |
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const TRANSACTION_CURRENCY_THB = '5303764'; |
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const COUNTRY_CODE_TH = '5802TH'; |
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const CHECKSUM_PREFIX = '6304'; |
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public function getqrcode($amount = 0, $ref_1 = 'none', $ref_2 = 'none', $billerId = '') |
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{ |
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$command = ''; |
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# Release version of QR |
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$command .= self::RELEASE_VERSION_OF_QR; |
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# Initial Method of QR |
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$command .= self::INITIAL_METHOD_OF_QR; |
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# Reference Code |
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$ref_01 = $this->f('02', $ref_1); |
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$ref_02 = $this->f('03', $ref_2); |
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$ref_command = self::SCB_PAYMENT_CODE . $billerId . $ref_01 . $ref_02; |
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$command .= $this->f('30', $ref_command); |
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# สกุลเงินบาท |
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$command .= self::TRANSACTION_CURRENCY_THB; |
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# จำนวนเงิน |
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$command .= $this->f('54', $this->formatAmount($amount)); |
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# CountryCode “TH” |
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$command .= self::COUNTRY_CODE_TH; |
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# SCB reference ไว้ใช้อ้างอิงระหว่าง ร้านค้ากับธนาคาร |
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$command .= $this->f('62', self::SCB_REFERENCE_CODE); |
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# CRC16 checksum |
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$command .= self::CHECKSUM_PREFIX; |
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$command .= $this->CRC16HexDigest($command); |
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$qrCode = new QrCode($command); |
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header('Content-Type: ' . $qrCode->getContentType()); |
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echo $qrCode->writeString(); |
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} |
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private function f($prefix, $data) { |
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return $prefix . sprintf("%02d", strlen($data)) . $data; |
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} |
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private function formatAmount($amount) { |
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return number_format($amount, 2, '.', ''); |
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} |
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private function crc16($data) { |
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$crc = 0xFFFF; |
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for ($i = 0; $i < strlen($data); $i++) { |
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$x = (($crc >> 8) ^ ord($data[$i])) & 0xFF; |
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$x ^= $x >> 4; |
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$crc = (($crc << 8) ^ ($x << 12) ^ ($x << 5) ^ $x) & 0xFFFF; |
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} |
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return $crc; |
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} |
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/* |
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* Returns CRC16 of a string as hexadecimal string |
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*/ |
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private function CRC16HexDigest($str) |
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{ |
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return sprintf('%04X', $this->crc16($str)); |
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} |
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} |
vansales /
qr-payment
