php实现httpRequest的方法

本文实例讲述了php实现httpRequest的方法。分享给大家供大家参考。具体如下：

想从学校图书馆的网站上抓取数据处理之后在返回给浏览器，试了不少方法。首先试了http_request()，但是这个学院pecl_http支持，后来又试了网上流传甚广的class HttpRequest，可能是我不会使用，也失败了。后来看到了函数httpRequest($url, $post="", $method="GET", $limit=0, $returnHeader=FALSE, $cookie="", $bysocket=FALSE, $ip="", $timeout=15, $block=TRUE)，用它成功了，因此贴出来分享一下。函数代码如下：复制代码 代码如下:<?php      /**     * Respose A Http Request     *     * @param string $url     * @param array $post     * @param string $method     * @param bool $returnHeader     * @param string $cookie     * @param bool $bysocket     * @param string $ip     * @param integer $timeout     * @param bool $block     * @return string Response     */      function httpRequest($url,$post="",$method="GET",$limit=0,$returnHeader=FALSE,$cookie="",$bysocket=FALSE,$ip="",$timeout=15,$block=TRUE) {         $return = "";         $matches = parse_url($url);         !isset($matches["host"]) && $matches["host"] = "";         !isset($matches["path"]) && $matches["path"] = "";         !isset($matches["query"]) && $matches["query"] = "";         !isset($matches["port"]) && $matches["port"] = "";         $host = $matches["host"];         $path = $matches["path"] ? $matches["path"].($matches["query"] ? "?".$matches["query"] : "") : "/";         $port = !empty($matches["port"]) ? $matches["port"] : 80;         if(strtolower($method) == "post") {             $post = (is_array($post) and !empty($post)) ? http_build_query($post) : $post;             $out = "POST $path HTTP/1.0";             $out .= "Accept: */*";             //$out .= "Referer: $boardurl";             $out .= "Accept-Language: zh-cn";             $out .= "Content-Type: application/x-www-form-urlencoded";             $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]";             $out .= "Host: $host";             $out .= "Content-Length: ".strlen($post)."";             $out .= "Connection: Close";             $out .= "Cache-Control: no-cache";             $out .= "Cookie: $cookie";             $out .= $post;         } else {             $out = "GET $path HTTP/1.0";             $out .= "Accept: */*";             //$out .= "Referer: $boardurl";             $out .= "Accept-Language: zh-cn";             $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]";             $out .= "Host: $host";             $out .= "Connection: Close";             $out .= "Cookie: $cookie";         }         $fp = fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);         if(!$fp) return ""; else {             $header = $content = "";             stream_set_blocking($fp, $block);             stream_set_timeout($fp, $timeout);             fwrite($fp, $out);             $status = stream_get_meta_data($fp);             if(!$status["timed_out"]) {//未超时                 while (!feof($fp)) {                     $header .= $h = fgets($fp);                     if($h && ($h == "" ||  $h == "")) break;                 }                   $stop = false;                 while(!feof($fp) && !$stop) {                     $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));                     $content .= $data;                     if($limit) {                         $limit -= strlen($data);                         $stop = $limit <= 0;                     }                 }             }          fclose($fp);             return $returnHeader ? array($header,$content) : $content;         }      }  ?>

调用也很简单的。简单的例子：复制代码 代码如下:echo httpRequest("http://www.baidu.com");

希望本文所述对大家的php程序设计有所帮助。