商品海报生成 带商品名称,价格,二维码,图片

因为客户上传的商品图大小不一,所以加了一个原图裁剪方法 mkThumbnail (代码参考另一篇文章 https://www.cnblogs.com/gyrgyr/p/13726317.html )

生成图示例:(背景尺寸1066*1599)

public function getActivityImg($logo='',$template,$url,$goods_info)
    { 
          $price = empty($goods_info['sg_vip_price']) || $goods_info['sg_vip_price']==0 ?$goods_info['sg_price']:$goods_info['sg_vip_price']; //商品价格
          $QR = "base.png"; 
          $last = "last.png"; 
          $errorCorrectionLevel = 'Q'; //防错等级 
          $matrixPointSize = 3; //二维码大小 

          //二维码位置
          $x = 815;
          $y = 625;
          //生成二维码 
          //参数内容:二维码储存内容，生成存储，防错等级，二维码大小，白边大小 
          Vendor('phpqrcode.phpqrcode');
          $object = new QRcode();
          $object->png($url, $QR, $errorCorrectionLevel, $matrixPointSize, 1); 

          $last = $QR;

          //合成二维码图片跟 模板图片
          $path_1 = $template; //背景图
          $path_2 = $last;  //二维码图
          $dst = imagecreatefromstring(file_get_contents($path_1));
          $src = imagecreatefromstring(file_get_contents($path_2));
          list($src_w, $src_h) = getimagesize($path_2);
          imagecopymerge($dst, $src, $x, $y, 0, 0, $src_w, $src_h, 100);

          //商品图片缩放为新图片
          $EchoPath='./share_cod/-'.rand(99).time().'.png';
          $r = $this->mkThumbnail($goods_info['sg_img_url'],'418','408',$EchoPath);
          //商品图位置
          $goods_x = 176;
          $goods_y = 937;
          //合并商品图  与  二维码带背景
          $path_2 =  $EchoPath;  //商品图
          $src = imagecreatefromstring(file_get_contents($path_2));
          list($src_w, $src_h) = getimagesize($path_2);
          imagecopymerge($dst, $src, $goods_x, $goods_y, 0, 0, $src_w, $src_h, 100);

        
          //打上文字  商品名称
          $font = '/usr/share/fonts/chinese/msyhbd.ttf';
          $g_name = mb_substr($goods_info['sg_name'],0,10,'utf-8').'...';
          /*
　　          这块注释的是原来设计图文字是居中的,具体文字数量不确定,所以计算的居中位置,后来改为靠右,有了具体尺寸就不用了
                $fontBox = imagettfbbox(33, 0, $font, $g_name);
                $textx = ceil((896 - $fontBox[2]) / 2 ); //计算居中位置
                $black = imagecolorallocate($dst, 0x00, 0x00, 0x00);//字体 
                $black = imagecolorallocate($dst, 0x00, 0x00, 0x00);//字体
                imagefttext($dst, 33, 0,  $textx,  290, $black, $font, $g_name);//字体颜色 
          */
          $black = imagecolorallocate($dst, 254, 243, 222);//字体
          imagefttext($dst, 50, 0,  370,  270, $black, $font, $g_name);//字体颜色 

          //打上文字 原价
          $black = imagecolorallocate($dst, 231,162,115);//字体 
          imagefttext($dst, 30, 0,  552,  388, $black, $font, intval($goods_info['sg_y_price']));//字体颜色 
          //打上文字 价格
          $black = imagecolorallocate($dst, 255,255,255);//字体 
          imagefttext($dst, 35, 0,  810,  388, $black, $font, intval($price));//字体颜色  
          //打上文字 卖点
          $black = imagecolorallocate($dst, 255, 255, 255);//字体 
          imagefttext($dst, 38, 0,  399,  530, $black, $font, $goods_info['sg_describe']);//字体颜色  

          //输出图片 
          list($dst_w, $dst_h, $dst_type) = getimagesize($path_1);
          switch ($dst_type) {
                case 1://GIF
                    $typ = 'gif';
                    break;
                case 2://JPG
                    $typ = 'jpg';
                    break;
                case 3://PNG
                    $typ = 'png';
                    break;
                default:
                    break;
            }

      
         //输出到本地文件夹，返回生成图片的路径 
         $fileName= get_mpid().'_'.$goods_info['sg_id'].time(); 
         $EchoPath='./Images/share_img/'.$fileName.'.'.$typ; 
         imagepng($dst,$EchoPath); 
         imagedestroy($dst); 
         imagedestroy($src); 
         return   $EchoPath; 
    }