PHP中使用CURL（五）

curl伪造IP和来源

client.php请求server.php

client.php

<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://localhost/server.php");
curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:8.8.8.8', 'CLIENT-IP:8.8.8.8'));  //构造IP
curl_setopt($ch, CURLOPT_REFERER, "http://www.google.com/ ");   //构造来路
curl_setopt($ch, CURLOPT_HEADER, 1);
$out = curl_exec($ch);
curl_close($ch);
?>

server.php

<?php
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() . "";//IP
echo "referer: " . $_SERVER["HTTP_REFERER"];//来源
?>

注：这个伪造建立在对方不对proxy ip还有remote_addr同时封禁的效果上。