PHP implements simple image synthesis method

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('phpqrcode.phpqrcode');//引用phpqrcode类包
    $url = $url_code;    $errorCorrectionLevel = 'H';//容错级别
    $matrixPointSize = 5;//图片大小慢慢自己调整，只要是int就行
    $path = 'user_cache/';    if (!file_exists($path)) {
        mkdir($path);
    }    $QR =$QRB = $path.rand(10000,99999).time().".png";
    \QRcode::png($url, $QR, $errorCorrectionLevel, $matrixPointSize, 2);    $dst_path = '20180326171846.png';//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,'uploads/user/'.$uid.'.png');//    imagejpeg($dst,'../uploads/user/'.$uid.'.jpg');
    imagedestroy($dst);
    imagedestroy($src);
}

2. Call the function in step one

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

    }

Related recommendations:

php imagick extended synthesis Two methods for pictures_PHP tutorial

The above is the detailed content of PHP implements simple image synthesis method. For more information, please follow other related articles on the PHP Chinese website!