php curl 代理 抓取資料

<?phpdefine ( 'IS_PROXY', true ); //是否啟用代理function async_get_url($url_array, $wait_usec = 0){    if (!is_array($url_array))        return false;    $wait_usec = intval($wait_usec);    $data    = array();    $handle  = array();    $running = 0;    $mh = curl_multi_init(); // 開啟多線程    $i = 0;    foreach($url_array as $url) {        $ch = curl_init();if (IS_PROXY) {//以下代碼設定Proxy 伺服器//Proxy 伺服器地址http://www.cnproxy.com/proxy1.html  !!Hong Kong, China的速度比較好curl_setopt ($ch, CURLOPT_PROXY,'110.4.12.170:80' );}        curl_setopt($ch, CURLOPT_URL, $url);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return don't print        curl_setopt($ch, CURLOPT_TIMEOUT, 30); //設定逾時時間        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)');        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // 302 redirect        curl_setopt($ch, CURLOPT_MAXREDIRS, 7); //HTTp定向層級        curl_multi_add_handle($mh, $ch); // 把 curl resource 放進 multi curl handler 裡        $handle[$i++] = $ch;    }    /* 執行 */do {$mrc = curl_multi_exec($mh, $running);if ($wait_usec > 0) /* 每個 connect 要間隔多久 */            usleep($wait_usec); // 250000 = 0.25 sec} while ($mrc == CURLM_CALL_MULTI_PERFORM);while ($running && $mrc == CURLM_OK) {if (curl_multi_select($mh) != -1) {do {$mrc = curl_multi_exec($mh, $running);} while ($mrc == CURLM_CALL_MULTI_PERFORM);}}    /* 讀取資料 */    foreach($handle as $i => $ch) {        $content  = curl_multi_getcontent($ch);        $data[$i] = (curl_errno($ch) == 0) ? $content : false;    }    /* 移除 handle*/    foreach($handle as $ch) {        curl_multi_remove_handle($mh, $ch);    }    curl_multi_close($mh);    return $data;}$urls = array('http://map.baidu.com');$re = async_get_url($urls); echo $re[0];?> 

轉自：http://hi.baidu.com/ylj798/item/322468136b70bc433a176efc

http://www.oschina.net/code/snippet_80475_6689

curl入門：http://www.chinaz.com/program/2010/0119/104346_5.shtml

免費Proxy 伺服器：http://www.cnproxy.com/proxy1.html