PHP利用CURL將他人伺服器圖片上傳到自己的圖片雲空間

/**
     * 图片上传
     * @author Dong
     * @date   2018-04-08
     * @param  [type]     $url  文件路径
     * @param  [type]     $type 文件类型
     */
    function upload_im_img($url,$type){
        // 二进制文件上传
        $file= file_get_contents($url);
        $filename = 'Filedata';//上传到$_FILES数组中的 key 
        $name = uniqid('',true).'.'.$type;//文件名 
        $type = 'image/jpeg';//文件类型 
         
        $key = "$filename\"; filename=\"$name\r\nContent-Type: $type\r\n"; 
        $fields[$key] = $file;  
        //将图片上传到七牛返回图片路径
        $ch = curl_init ();
        $url = 'http://你的域名.com/api/uploadqiniu.html';  
        curl_setopt ( $ch, CURLOPT_SAFE_UPLOAD, false);  
        curl_setopt ( $ch, CURLOPT_URL, $url );  
        curl_setopt ( $ch, CURLOPT_POST, 1 );  
        curl_setopt ( $ch, CURLOPT_POSTFIELDS, $fields );  
        curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );  
        $filename= curl_exec ( $ch );
        $filename = substr($filename,3);//进行截取
        return  $fileurl;
    }

function uploadqiniu(){
        $exts = array('bmp','jpg', 'tif','tiff','gif', 'png', 'jpeg','xls','xlsx','dwg','dxf','hom','zip','txt','max','3ds','obj','fbx');
        if (!empty($_FILES)) {
            //图片上传设置
            $config = array(
                'maxSize'    =>    30*1024*1024, //设置附件上传大小  30MB = 31457280;
                'savePath'   =>    '',
                'saveName'   =>    array('uniqid',''),//
                'exts'       =>    $exts,
                'autoSub'    =>    false,
                'subName'    =>    '',//保存后缀,
            );
            $driverConfig = array (
                'accessKey' => C('PIC_AK'),
                'secretKey' => C('PIC_SK'),
                'domain' => C('PIC_DOMAIN'),
                'bucket' => C('PIC_BUCKET'),
            );
    
            $Upload = new \Think\Upload($config,'Qiniu',$driverConfig);
            $return_img = $Upload->upload($_FILES);
            //判断是否有图
            if($return_img){
                $filename = $return_img['Filedata']['savename'];
                echo $filename;
            }else{
                $this->error($Upload->getError());//获取失败信息
            }
            
        }

    }