php 采集其它服务器文件程序

header("pragma:no-cachern");
header("cache-control:no-cachern");
header("expires:0rn");
$rmurl = "https://www.111cn.net/demodata.txt";

$infostring = file_get_contents($rmurl) or die("连接远程网址失败！");
$infos = split(',',$infostring);
$maxnum =count($infos);
$rmurl = trim($infos[rand(0,$maxnum-1)]);

$zipbin = file_get_contents($rmurl);
$fp = fopen(dirname(__file__).'/dedev56demo.zip','w');
fwrite($fp,$zipbin);
unset($zipbin);
fclose($fp);