PHP implements simple image synthesis method-PHP Tutorial-php.cn

PHP implements simple image synthesis method

小云云

Release： 2023-03-22 18:18:01

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This article mainly shares with you how to implement simple image synthesis in PHP. It is mainly shared with you in the form of code. I hope it can help you.

1. Encapsulation function

//生成二维码function qr_user_code($url_code,$uid){
    header("Access-Control-Allow-Origin:*");
    vendor(&#39;phpqrcode.phpqrcode&#39;);//引用phpqrcode类包
    $url = $url_code;    $errorCorrectionLevel = &#39;H&#39;;//容错级别
    $matrixPointSize = 5;//图片大小慢慢自己调整，只要是int就行
    $path = &#39;user_cache/&#39;;    if (!file_exists($path)) {
        mkdir($path);
    }    $QR =$QRB = $path.rand(10000,99999).time().".png";
    \QRcode::png($url, $QR, $errorCorrectionLevel, $matrixPointSize, 2);    $dst_path = &#39;20180326171846.png&#39;;//web\lALPBbCc1VATaEvNA4DNAnw_636_896.png
    $src_path = $QR;//覆盖图
    //创建图片的实例
    $dst = imagecreatefromstring(file_get_contents($dst_path));    $src = imagecreatefromstring(file_get_contents($src_path));//获取覆盖图图片的宽高
    list($src_w, $src_h) = getimagesize($src_path);//将覆盖图复制到目标图片上，最后个参数100是设置透明度（100是不透明），这里实现不透明效果
    imagecopymerge($dst, $src, 184, 410, 0, 0, 286, 286, 100);//     @unlink($QIMG); //删除二维码与logo的合成图片
    @unlink($QRB);  //删除服务器上二维码图片
    header("Content-type: image/png");
    imagepng($dst,&#39;uploads/user/&#39;.$uid.&#39;.png&#39;);//    imagejpeg($dst,&#39;../uploads/user/&#39;.$uid.&#39;.jpg&#39;);
    imagedestroy($dst);
    imagedestroy($src);
}

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2. Call the function in step one

 public function qr_code($uid){
        $url = &#39;http://ypyz.yxyzyl.com/template/mobile/xian/static/takehtml/personalhtml/bind.html?uid=&#39;.$uid;
        qr_user_code($url,$uid);//因为我封装在common里面的，所以这样调用
        $time = time();        $path = &#39;/uploads/user/&#39;.$uid.&#39;.png&#39;;        $sha1 = sha1($uid.$time.&#39;.png&#39;);        $res = (new Us())->where([&#39;user_id&#39;=>$uid])->update([&#39;qr_code&#39;=>$sha1]);        $re = db(&#39;picture&#39;)->insert([            &#39;path&#39;=>$path,            &#39;sha1&#39;=>$sha1,            &#39;status&#39;=>1,            &#39;create_time&#39;=>$time
        ]);        if ($res !== false&&$re!=false) {            $this->assign(&#39;path&#39;,$path);            return $this->fetch();
        } else {            $this->error(&#39;生成二维码失败&#39;, &#39;&#39;);
        }

    }

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