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PHP generates pictures with QR codes and forces download of implementation code

小云云

Feb 24, 2018 pm 02:37 PM

phpdownloadforce

This article mainly shares with you how to generate images with QR codes in PHP and force download the implementation code. I hope it can help you realize your own QR code.

/* 下载二维码  */
	public function 测试(){
		// 接收传递的参数
		$data[&#39;keys&#39;] = [	&#39;b01id&#39;=>trim(I(&#39;get.b01id&#39;)),
							&#39;b02id&#39;=>trim(I(&#39;get.b02id&#39;)),
							&#39;b03id&#39;=>trim(I(&#39;get.b03id&#39;)),
							&#39;brid&#39;=>trim(I(&#39;get.brid&#39;)),
							&#39;unicon&#39;=>trim(I(&#39;get.unicon&#39;))];


		if(empty($data[&#39;keys&#39;][&#39;b01id&#39;])) $this->error(&#39;商户不存在&#39;,U(&#39;Seller/index&#39;),3);
		$res = D(&#39;Sellerbrcode&#39;)->download($data); //方法在下面
		if(!is_array($res)) $this->error($res,U(&#39;Seller/index&#39;),3);
		if(!empty($res[&#39;error&#39;])) $this->error($res[&#39;error&#39;],U(&#39;Seller/seebrcode?&#39;.$res[&#39;url&#39;]),3);


		// 制作扫码牌
		$bgimg = imagecreatefromstring(file_get_contents($res[&#39;bgimg&#39;]));	// 拿到背景图做画布
		import(&#39;Component/phpqrcode&#39;,APP_PATH,&#39;.php&#39;);       // 引入二维码生成类


		// 如果有扫码123二维码，则生成扫码123二维码
		if(&#39;&#39; != $res[&#39;codea&#39;]){
			/* 参数说明：
			 * 参数1：二维码需要保持的值
			 * 参数2：false代表直接输出，其他则是生成的文件名
			 * 参数3：纠错级别：L、M、Q、H
			 * 参数4：点的大小，数值越大图片越大
			 * */
			\QRcode::png($res[&#39;codea&#39;], $res[&#39;codeimg&#39;], &#39;H&#39;, 18);
			/* 使用图片缩放方法
			bool imagecopyresized（$dst_im，$src_im，$dst_x，$dst_y，$src_x，$src_y，$dst_w，$dst_h，$src_w，$src_h）
					dst_im 目标图像链接的资源。
					src_im 源图像链接的资源。
					dst_x X坐标的目的地。
					dst_y y坐标目的地。
					src_x X坐标的源点。
					src_y y坐标源点。
					dst_w 目的地宽度。
					dst_h 目标高度。
					src_w 源宽度。
					src_h 源高度。
			 * */
			$codeimg = imagecreatefromstring(file_get_contents($res[&#39;codeimg&#39;]));	// 拿到二维码图片
			$bg_info = getimagesize($res[&#39;codeimg&#39;]);								// 得到原二维码图片的大小
			imagecopyresized($bgimg,$codeimg,1520,550,0,70,700,666,$bg_info[0],$bg_info[1]-36);
		}


		// 如果存在银联云闪付二维码，则生成银联云闪付二维码图片
		if(&#39;&#39; != $res[&#39;codeb&#39;]){
			\QRcode::png($res[&#39;codeb&#39;], $res[&#39;paycodeimg&#39;], &#39;H&#39;, 18);
			$codeimg = imagecreatefromstring(file_get_contents($res[&#39;paycodeimg&#39;]));// 拿到二维码图片
			$bg_info = getimagesize($res[&#39;paycodeimg&#39;]);							// 得到原二维码图片的大小
			imagecopyresized($bgimg,$codeimg,236,536,0,80,750,670,$bg_info[0],$bg_info[1]-80);
		}


		// 如果存在商户推广二维码，则生成商户推广二维码图片
		if(&#39;&#39; != $res[&#39;codec&#39;]){
			\QRcode::png($res[&#39;codec&#39;], $res[&#39;bridimg&#39;], &#39;H&#39;, 18);
			$codeimg = imagecreatefromstring(file_get_contents($res[&#39;bridimg&#39;]));	// 拿到二维码图片
			$bg_info = getimagesize($res[&#39;bridimg&#39;]);								// 得到原二维码图片的大小
			imagecopyresized($bgimg,$codeimg,1375,1288,0,0,230,230,$bg_info[0],$bg_info[1]);
		}


		// 如果存在商户名称
		if(&#39;&#39; != $res[&#39;bName&#39;]){
			// 为了让文字居中，需要计算左偏移量
			preg_match_all("/[0-9]{1}/",$res[&#39;bName&#39;],$len1);					// 得到字符串中的字数量
			preg_match_all("/[a-zA-Z]{1}/",$res[&#39;bName&#39;],$len2);				// 得到字符串中的字母数量
			preg_match_all("/([\x{4e00}-\x{9fa5}]){1}/u",$res[&#39;bName&#39;],$len3);	// 得到字符串中的中文数量
			$left = 610 - (count($len1[0]) * 16) - (count($len2[0]) * 15) - (count($len3[0]) * 28);


			$res[&#39;filename&#39;] .= &#39;_&#39; . $res[&#39;bName&#39;];							// 追加二维码名称
			$black = imagecolorallocate($bgimg, 0x20, 0x57, 0xa0);				// 字体颜色
			imagefttext($bgimg, 42, 0, $left, 480, $black,&#39;./Public/font/msyh.ttf&#39;,$res[&#39;bName&#39;]);
		}


		// 如果存在二维码编号，则写入二维码编号
		if(&#39;&#39; != $res[&#39;brid&#39;]){
			$black = imagecolorallocate($bgimg, 0x3e, 0x75, 0xc7);				//字体颜色
			imagefttext($bgimg, 30, 0, 1720,1190, $black,&#39;./Public/font/msyh.ttf&#39;,$res[&#39;brid&#39;]);
		}


		// 添加银联云闪付logo
		$codeimg = imagecreatefromstring(file_get_contents($res[&#39;union&#39;]));		// 拿到二维码图片
		$bg_info = getimagesize($res[&#39;union&#39;]);									// 得到原logo图片的大小
		imagecopyresized($bgimg,$codeimg,550,760,0,0,120,120*$bg_info[1]/$bg_info[0],$bg_info[0],$bg_info[1]);


		// 添加添加扫码123logo
		$codeimg = imagecreatefromstring(file_get_contents($res[&#39;logo&#39;]));		// 拿到二维码图片
		$bg_info = getimagesize($res[&#39;logo&#39;]);									// 得到原logo图片的大小
		imagecopyresized($bgimg,$codeimg,1805,770,0,0,120,120*$bg_info[1]/$bg_info[0],$bg_info[0],$bg_info[1]);


		$res[&#39;filename&#39;] .= &#39;_&#39; . date(&#39;Y-m-d&#39;,time()) . &#39;.png&#39;;				// 追加二维码名称


		header(&#39;Pragma: public&#39;); 	// required
		header(&#39;Expires: 0&#39;); 		// no cache
		header(&#39;Cache-Control: must-revalidate, post-check=0, pre-check=0&#39;);
		header(&#39;Cache-Control: private&#39;,false);
		header(&#39;Content-Type: application/force-download&#39;);
		header(&#39;Content-Disposition: attachment; filename="&#39;.$res[&#39;filename&#39;].&#39;"&#39;);
		header(&#39;Content-Transfer-Encoding: binary&#39;);
		header(&#39;Connection: close&#39;);


		imagepng($bgimg);
	}

/* 生成图片前 拼接数据  */
public function download($data){
$tool  = D(&#39;Tool&#39;);
// 得到公共类
$mysql = M();
$admin = I(&#39;session.admin&#39;);
/* 拼接url，方便以下错误时，跳转使用 */ 
$show[&#39;url&#39;] = &#39;b01id=&#39;.$data[&#39;keys&#39;][&#39;b01id&#39;];
// 如果传递了用户id，那么判断该用户是否属于该商户
if($data[&#39;keys&#39;][&#39;b03id&#39;]) 
$show[&#39;url&#39;].= &#39;&b03id=&#39;.$data[&#39;keys&#39;][&#39;b03id&#39;];
// 如果传递了二维码id
if($data[&#39;keys&#39;][&#39;b02id&#39;]) 
$show[&#39;url&#39;].= &#39;&b02id=&#39;.$data[&#39;keys&#39;][&#39;b02id&#39;];
// 如果传递了银联云闪付
if($data[&#39;keys&#39;][&#39;unicon&#39;]) $show[&#39;url&#39;].= &#39;&unicon=&#39;.$data[&#39;keys&#39;][&#39;unicon&#39;];
// 如果传递了推广二维码
if($data[&#39;keys&#39;][&#39;brid&#39;]) 
$show[&#39;url&#39;].= &#39;&brid=&#39;.$data[&#39;keys&#39;][&#39;brid&#39;];
// 调用上部方法得到数据
$data = $this->seebrcode($data,$tool,$mysql,$admin,false);
if(!is_array($data)){ return [&#39;error&#39;=>$data,&#39;url&#39;=>$show[&#39;url&#39;]]; }
/* 得到要展示的数据
*/
$show[&#39;bgimg&#39;] 
= &#39;./Public/img/qrcode/qrcode.png&#39;;
// 背景图片地址
$show[&#39;logo&#39;] 
= &#39;./Public/img/qrcode/logo.png&#39;;
// 扫码123的logo地址
$show[&#39;union&#39;]   
= &#39;./Public/img/qrcode/unionPay.png&#39;;
// 银联logo地址
$show[&#39;codeimg&#39;] 
= &#39;./Public/img/qrcode/code.png&#39;;
// 普通二维码生成的保存地址
$show[&#39;paycodeimg&#39;] = &#39;./Public/img/qrcode/paycode.png&#39;;
// 银联二维码生成的保存地址
$show[&#39;bridimg&#39;] 
= &#39;./Public/img/qrcode/brid.png&#39;;
// 商户推广二维码图片的保存地址
$show[&#39;filename&#39;]
= &#39;扫码123收款二维码&#39;;
// 二维码名称
// 扫码123二维码内容
$show[&#39;codea&#39;] 
= (!$data[&#39;keys&#39;][&#39;b02id&#39;])  ? &#39;&#39; : isset($data[&#39;qrcode&#39;][$data[&#39;keys&#39;][&#39;b02id&#39;]])  ? $data[&#39;url1&#39;].$data[&#39;qrcode&#39;][$data[&#39;keys&#39;][&#39;b02id&#39;]][&#39;brCode&#39;] : &#39;&#39;;
// 扫码123二维码编号
$show[&#39;brid&#39;] 
= (!$data[&#39;keys&#39;][&#39;b02id&#39;])  ? &#39;&#39; : isset($data[&#39;qrcode&#39;][$data[&#39;keys&#39;][&#39;b02id&#39;]])  ? &#39;NO.&#39;.$data[&#39;keys&#39;][&#39;b02id&#39;] : &#39;&#39;;
// 银联二维码
$show[&#39;codeb&#39;] 
= (!$data[&#39;keys&#39;][&#39;unicon&#39;]) ? &#39;&#39; : isset($data[&#39;qrcode&#39;][$data[&#39;keys&#39;][&#39;unicon&#39;]]) ? $data[&#39;qrcode&#39;][$data[&#39;keys&#39;][&#39;unicon&#39;]][&#39;brCode&#39;] : &#39;&#39;;
// 商户推广二维码
$show[&#39;codec&#39;] 
= (!$data[&#39;keys&#39;][&#39;brid&#39;])
 ? &#39;&#39; : isset($data[&#39;download&#39;][$data[&#39;keys&#39;][&#39;brid&#39;]]) ? $data[&#39;url2&#39;].$data[&#39;download&#39;][$data[&#39;keys&#39;][&#39;brid&#39;]][&#39;brCode&#39;] : &#39;&#39;;
// 商户名称
$show[&#39;bName&#39;] 
= empty($data[&#39;seller&#39;][&#39;bShortName&#39;]) ? (empty($data[&#39;seller&#39;][&#39;bName&#39;]) ? (empty($data[&#39;seller&#39;][&#39;bCode&#39;]) ? $data[&#39;seller&#39;][&#39;b01id&#39;] : $data[&#39;seller&#39;][&#39;bCode&#39;]) : $data[&#39;seller&#39;][&#39;bName&#39;] ) : $data[&#39;seller&#39;][&#39;bShortName&#39;];
/* 如果存在旧图片，则删除旧图片 */
if(is_file($res[&#39;codeimg&#39;])) 
unlink($res[&#39;codeimg&#39;]); 
// 删除旧的扫码123二维码图片
if(is_file($res[&#39;paycodeimg&#39;])) unlink($res[&#39;paycodeimg&#39;]); // 删除旧的银联云闪付二维码图片
if(is_file($res[&#39;paycodeimg&#39;])) unlink($res[&#39;paycodeimg&#39;]); // 删除旧的商户推广二维码图片
return $show;
}

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