温馨提示：
1. 此代码样例同时支持访问http和https网页
2. curl不是php原生库，需要安装才能使用:
Ubuntu/Debian系统：apt-get install php5-curl
CentOS系统：yum install php-curl
3. 代理样例的代理IP均为虚构，请通过站大爷的API提取链接获取代理IP后添加使用
<?php
//要访问的目标页面
$page_url = "https://example.com";
$ch = curl_init();
$proxy_ip = "168.168.168.168";
$proxy_port = "8888";
$proxy = $proxy_ip.":".$proxy_port;
// 用户名+密码授权
$username = "username";
$password = "password";
//$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $page_url);
//发送post请求
$requestData["post"] = "send post request";
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($requestData));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
//设置代理
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
curl_setopt($ch, CURLOPT_PROXY, $proxy);
//设置代理用户名密码
curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_PROXYUSERPWD, "{$username}:{$password}");
//自定义header
$headers = array();
$headers["user-agent"] = 'User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0);';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
//自定义cookie
curl_setopt($ch, CURLOPT_COOKIE,'');
curl_setopt($ch, CURLOPT_ENCODING, 'gzip'); //使用gzip压缩传输数据让访问更快
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);
echo "$result"; // 使用请求页面方式执行时，打印变量需要加引号
echo "\n\nfetch ".$info['url']."\ntimeuse: ".$info['total_time']."s\n\n";
