本文实例讲述了php使用curl代理实现抓取数据的方法。分享给大家供大家参考，具体如下：
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<?phpdefine ( 'IS_PROXY', true ); //是否启用代理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(); // 开启多线程 $i = 0; foreach($url_array as $url) { $ch = curl_init(); if (IS_PROXY) { //以下代码设置代理服务器 //代理服务器地址http://www.cnproxy.com/proxy1.html !!Hong Kong, China的速度比较好 curl_setopt ($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($ch, CURLOPT_TIMEOUT, 30); //设置超时时间 curl_setopt($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定向级别 curl_multi_add_handle($mh, $ch); // 把 curl resource 放进 multi curl handler 里 $handle[$i++] = $ch; } /* 执行 */ do { $mrc = curl_multi_exec($mh, $running); if ($wait_usec > 0) /* 每个 connect 要间隔多久 */ 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); } } /* 读取资料 */ 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];?> |
希望本文所述对大家PHP程序设计有所帮助。
