TP5 generates the most detailed two-dimensional code tp6 (also available)

effect ：

One ： download phpqrcode Class file

1. Download address ：PHP QR Code download | SourceForge.net

After downloading, unzip it and put it in tp5 In the framework vendor Below directory （vendor Generally store third-party plug-ins ）

2.PHP The environment must turn on support GD2 Extended library support （ It's usually on ）

3. The preparations are all done , The next step is the code part , Just write and call the following methods in the controller , You can see the QR code you want

  Be careful ： The following code is tp5 Generate qr code ,tp6 Words Use require introduce phpqrcode.php, Just open tp6 notes , notes tp5 vendor Methods introduced

/// QR code 
    public function createImg($url='')
    {

        vendor('phpqrcode.phpqrcode');// Introducing class library tp5
//        require "../vendor/phpqccode/phpqrcode.php";//tp6 Introducing class library methods 

        $value = $url;         // QR code content 
        $errorCorrectionLevel = 'L';  // Fault tolerance level 
        $matrixPointSize = 5;      // Generate image size 
        // Generate QR code image 
        //  Determine whether this folder exists    If not, create one 
        if (!is_dir("qrcode")) {
            //  Create file plus 
            mkdir("qrcode");
        }
        // Set the QR code file name 
        $filename = './qrcode/' . time() . rand(10000, 9999999) . '.png';
        // Generate qr code 
        \QRcode::png($value, $filename, $errorCorrectionLevel, $matrixPointSize, 2);
        return $filename;
    }

 4. call

Use the call where you need it , The two-dimensional code will be generated and returned to us with a path , The picture is already in public/qrcode/ To generate, you only need to splice our domain name to access

 $img =  $this-> createImg($orderNumber);// QR code path 

5.

This is the third step if you need to convert base64 Data paste the following code can be slightly modified

// If you need to convert to base64 data , Just untangle the line below 
　//$image_data = chunk_split(base64_encode(fread(fopen($filename, 'r'), filesize($filename))));
// Get the current domain name  $request = Request::instance(); $domain = $request->domain(); 　　　　　 

return $domain.'/'.$filename; 
} 

  belt logo Two dimensional code

function scerweima1($url=''){
    Vendor('phpqrcode.phpqrcode');
    $value = $url;         // QR code content 
    $errorCorrectionLevel = 'H';  // Fault tolerance level 
    $matrixPointSize = 6;      // Generate image size 
    // Generate QR code image 
    $filename = './qrcode/' . time() . rand(10000, 9999999) . '.png';
    QRcode::png($value,$filename , $errorCorrectionLevel, $matrixPointSize, 2);
    $logo = VENDOR_PATH.'phpqrcode\images'.'\logo.png'; // Ready logo picture 
    $QR = $filename;      // The original QR code graph that has been generated 
    if (file_exists($logo)) {
        $QR = imagecreatefromstring(file_get_contents($QR));    // Target image connection resource .
        $logo = imagecreatefromstring(file_get_contents($logo));  // Source image connection resource .
        $QR_width = imagesx($QR);      // QR code image width 
        $QR_height = imagesy($QR);     // QR code image height 
        $logo_width = imagesx($logo);    //logo Image width 
        $logo_height = imagesy($logo);   //logo Picture height 
        $logo_qr_width = $QR_width / 4;   // After the combination logo Width ( Take up... Of QR code 1/5)
        $scale = $logo_width/$logo_qr_width;  //logo Width scaling ratio ( The width of itself / Combined width )
        $logo_qr_height = $logo_height/$scale; // After the combination logo Height 
        $from_width = ($QR_width - $logo_qr_width) / 2;  // After the combination logo The coordinate point of the upper left corner 
        // Recombine the picture and resize 
        /*
         * imagecopyresampled()  Put an image ( Source image ) Copy a square area in to another image 
         */
        imagecopyresampled($QR, $logo, $from_width, $from_width, 0, 0, $logo_qr_width,$logo_qr_height, $logo_width, $logo_height);
    }
    // Output pictures 
    imagepng($QR, 'qrcode.png');
    imagedestroy($QR);
    imagedestroy($logo);
    return '<img src="qrcode.png" alt=" Use wechat to scan payment ">';
}
 The same way .