PHP 将远程文件写入到pdf或者word

/**
 * 下载
 */
public function download($ids = null)
{
  //一些条件参数啥的
　　$data = [];

//获取文件
    $res = curl_post(url, $data);

//如果是base64之类格式的需要转码

//写入文件(创建文件)

    file_put_contents('./1.pdf', $res);
}

curl_post函数

function curl_post($url,$data = null,$json = true)
{
    if(empty($url))
        return false;

    $curl = curl_init();
    curl_setopt($curl,CURLOPT_URL,$url);
    curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,false);
    curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,false);
    if(!empty($data)) {
        if($json && is_array($data)) {
            $data = json_encode($data);
        }
        curl_setopt($curl,CURLOPT_POST,1);
        curl_setopt($curl,CURLOPT_POSTFIELDS,$data);
        if($json) { //发送JSON数据
            curl_setopt($curl,CURLOPT_HEADER,0);
            curl_setopt($curl,CURLOPT_HTTPHEADER,[
                    'Content-Type: application/json;charset=UTF-8',
                    'Content-Length:' . strlen($data),
                ]);
        }
    }

    curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
    $res     = curl_exec($curl);
    $errorno = curl_errno($curl);
    if($errorno) {
        return ['errorno' => false,'errmsg' => $errorno];
    }
    curl_close($curl);

    return json_decode($res,true);
}