PHP使用代理访问网站方法

<?php$requestUrl = ’phpxs.com’;$ch = curl_init();$timeout = 5;curl_setopt ($ch, CURLOPT_URL, $requestUrl);curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC); //代理认证模式curl_setopt($ch, CURLOPT_PROXY, '112.23.451.72'); //代理服务器地址curl_setopt($ch, CURLOPT_PROXYPORT, 80); //代理服务器端口//curl_setopt($ch, CURLOPT_PROXYUSERPWD, ':'); //http代理认证帐号，名称:pwd的格式curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP); //使用http代理模式$file_contents = curl_exec($ch);curl_close($ch);echo $file_contents;?>