<?php
header('Content-Type: text/html; charset=utf-8');

$cookie_file = dirname(__FILE__).'/cookie.txt';
//$cookie_file = tempnam("tmp","cookie");

//先获取cookies并保存
$url = "http://www.google.com.hk";
$ch = curl_init($url); //初始化
curl_setopt($ch, CURLOPT_HEADER, 0); //不返回header部分
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //返回字符串，而非直接输出
curl_setopt($ch, CURLOPT_COOKIEJAR,  $cookie_file); //存储cookies
curl_exec($ch);
curl_close($ch);

//使用上面保存的cookies再次访问
$url = "http://www.google.com.hk/search?oe=utf8&ie=utf8&source=uds&hl=zh-CN&q=qq";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file); //使用上面获取的cookies
$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>