thinkphp5.1合成帶二維碼海報圖片

效果圖

二維碼生成方法採用phpqrcode插件 ，採用命名空間設計在extend建立phpqrcode文件夾，下面在建立QRcode.php

QRcode.php

代碼太長附下載鏈接
下載鏈接

use phpqrcode\QRcode;

//生成二維碼圖片返回鏈接地址
    public function qrcode(){
        $recommend = "10003";
        $url = config('WEB_URL')."?recommend=".$recommend;
        $path = "./public/qrcode/".$recommend.".jpg";
        if(!file_exists('./public/qrcode/')){
            mkdir('./public/qrcode/',0777,true);
        }
        $level=3;
        $size=5;
        $errorCorrectionLevel =intval($level);
        $matrixPointSize = intval($size);
        QRcode::png($url, $path, $errorCorrectionLevel, $matrixPointSize, 2);
        $host = config('WEB_URL');
        $r_path =  "/public/qrcode/".$recommend.".jpg";
        $img = $host.'/'.$r_path;
        return $img;
    }

/**
     * 生成宣傳海報
     * @param  array    參數,包括圖片和文字
     * @param  string   $filename 生成海報文件名,不傳此參數則不生成文件,直接輸出圖片
     * @return [type] [description]
     */
    function createPoster($config=array(),$filename=""){
        //如果要看報什麼錯，可以先註釋調這個header 
        if(empty($filename)) header("content-type: image/png");
            $imageDefault = array(
                'left'=>0,
                'top'=>0,
                'right'=>0,
                'bottom'=>0,
                'width'=>100,
                'height'=>100,
                'opacity'=>100
            );
            $textDefault =  array(
                'text'=>'',
                'left'=>0,
                'top'=>0,
                'fontSize'=>32,             //字號
                'fontColor'=>'255,255,255', //字體顏色
                'angle'=>0,
            );
        $background = $config['background'];//海報最底層得背景  
        //背景方法
        $backgroundInfo = getimagesize($background);
        $backgroundFun = 'imagecreatefrom'.image_type_to_extension($backgroundInfo[2], false);
        $background = $backgroundFun($background);
     
        $backgroundWidth = imagesx($background);    //背景寬度
        $backgroundHeight = imagesy($background);   //背景高度
     
        $imageRes = imageCreatetruecolor($backgroundWidth,$backgroundHeight); 
        $color = imagecolorallocate($imageRes, 0, 0, 0);  
        imagefill($imageRes, 0, 0, $color);  
        // imageColorTransparent($imageRes, $color);    //顏色透明
        imagecopyresampled($imageRes,$background,0,0,0,0,imagesx($background),imagesy($background),imagesx($background),imagesy($background));
        //處理了圖片
        if(!empty($config['image'])){
            foreach ($config['image'] as $key => $val) {
                $val = array_merge($imageDefault,$val);
                $info = getimagesize($val['url']);
                $function = 'imagecreatefrom'.image_type_to_extension($info[2], false);
                if($val['stream']){     //如果傳的是字符串圖像流
                    $info = getimagesizefromstring($val['url']);
                    $function = 'imagecreatefromstring';
                }
                $res = $function($val['url']);
                $resWidth = $info[0];
                $resHeight = $info[1];
                //建立畫板 ，縮放圖片至指定尺寸
                $canvas=imagecreatetruecolor($val['width'], $val['height']); 
                imagefill($canvas, 0, 0, $color);
                //關鍵函數，參數（目標資源，源，目標資源的開始座標x,y, 源資源的開始座標x,y,目標資源的寬高w,h,源資源的寬高w,h） 
                imagecopyresampled($canvas, $res, 0, 0, 0, 0, $val['width'], $val['height'],$resWidth,$resHeight); 
                $val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']) - $val['width']:$val['left'];
                $val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']) - $val['height']:$val['top'];
                //放置圖像
                imagecopymerge($imageRes,$canvas, $val['left'],$val['top'],$val['right'],$val['bottom'],$val['width'],$val['height'],$val['opacity']);//左，上，右，下，寬度，高度，透明度 
            }
        }
     
        //處理文字
        if(!empty($config['text'])){
            foreach ($config['text'] as $key => $val) {
                $val = array_merge($textDefault,$val);
                list($R,$G,$B) = explode(',', $val['fontColor']);
                $fontColor = imagecolorallocate($imageRes, $R, $G, $B); 
                $val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']):$val['left'];
                $val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']):$val['top'];
                imagettftext($imageRes,$val['fontSize'],$val['angle'],$val['left'],$val['top'],$fontColor,$val['fontPath'],$val['text']); 
            }
        }   

        //生成圖片  
        if(!empty($filename)){
            $res = imagejpeg ($imageRes,$filename); //保存到本地
            imagedestroy($imageRes);
            if(!$res) return false;
            return $filename;
        }else{
            imagejpeg ($imageRes);          //在瀏覽器上顯示
            imagedestroy($imageRes);
        }  
    }

繪圖合併

public function user_qrcode(){
        $config = array(
          'text'=>array(
            array(
              'text'=>'不看二生',
              'left'=>182,
              'top'=>100,
              'fontPath'=>'qrcode/simhei.ttf',     //字體文件
              'fontSize'=>36,             //字號
              'fontColor'=>'255,255,255',       //字體顏色
              'angle'=>0,
            ),
            array(
              'text'=>'我已使用，邀請你成爲口播大師',
              'left'=>182,
              'top'=>160,
              'fontPath'=>'qrcode/simhei.ttf',     //字體文件
              'fontSize'=>24,             //字號
              'fontColor'=>'255,255,255',       //字體顏色
              'angle'=>0,
            )
          ),
          'image'=>array(
            array(
              'url'=>'',       //圖片資源路徑
              'stream'=>0,
                    'left'=>250,
                    'top'=>-130,
                    'right'=>0,
                    'bottom'=>0,
                    'width'=>190,
                    'height'=>190,
                    'opacity'=>100
            ),
            array(
              'url'=>'',
              'left'=>40,
              'top'=>50,
              'right'=>0,
              'stream'=>0,
              'bottom'=>0,
              'width'=>120,
              'height'=>120,
              'opacity'=>100
            ),
          ),
          'background'=>'',
        );
        //$filename = "./public/qrcode/"."1.jpg";
        //echo $this->createPoster($config,$filename);
        $this->createPoster($config);
        die;
    }