1.php 请求 2.php 。1.php代码：$ch = curl_init();curl_setopt($ch, CURLOPT_URL, "http://localhost/2.php");curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:8.8.8.8', 'CLIENT-IP:8.8.8.8'));  //构造IPcurl_setopt($ch, CURLOPT_REFERER, "http://www.gosoa.com.cn/ ");   //构造来路curl_setopt($ch, CURLOPT_HEADER, 1);$out = curl_exec($ch);curl_close($ch);2.php代码如下：function getClientIp() {    if (!empty($_SERVER["HTTP_CLIENT_IP"]))        $ip = $_SERVER["HTTP_CLIENT_IP"];    else if (!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))        $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];    else if (!empty($_SERVER["REMOTE_ADDR"]))        $ip = $_SERVER["REMOTE_ADDR"];    else        $ip = "err";    return $ip;}echo "IP: " . getClientIp() . "";echo "referer: " . $_SERVER["HTTP_REFERER"];