簡述php實現httpRequest的方法

這篇文章主要介紹了php實現httpRequest的方法,涉及php操作http的技巧,具有一定參考借鑒價值,需要的朋友可以參考下

本文執行個體講述了php實現httpRequest的方法。具體如下：

想從學校圖書館的網站上抓取資料處理之後在返回給瀏覽器，試了不少方法。首先試了http_request()，但是這個學院pecl_http支援，後來又試了網上流傳甚廣的class HttpRequest，可能是我不會使用，也失敗了。後來看到了函數httpRequest($url, $post='', $method='GET', $limit=0, $returnHeader=FALSE, $cookie='', $bysocket=FALSE, $ip='', $timeout=15, $block=TRUE)，用它成功了，因此貼出來分享一下。函數代碼如下：

代碼如下:

<?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\r\n";             $out .= "Accept: */*\r\n";             //$out .= "Referer: $boardurl\r\n";             $out .= "Accept-Language: zh-cn\r\n";             $out .= "Content-Type: application/x-www-form-urlencoded\r\n";             $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";             $out .= "Host: $host\r\n";             $out .= 'Content-Length: '.strlen($post)."\r\n";             $out .= "Connection: Close\r\n";             $out .= "Cache-Control: no-cache\r\n";             $out .= "Cookie: $cookie\r\n\r\n";             $out .= $post;         } else {             $out = "GET $path HTTP/1.0\r\n";             $out .= "Accept: */*\r\n";             //$out .= "Referer: $boardurl\r\n";             $out .= "Accept-Language: zh-cn\r\n";             $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";             $out .= "Host: $host\r\n";             $out .= "Connection: Close\r\n";             $out .= "Cookie: $cookie\r\n\r\n";         }         $fp = fsockopen(($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(!$status['timed_out']) {//未逾時                 while (!feof($fp)) {                     $header .= $h = fgets($fp);                     if($h && ($h == "\r\n" ||  $h == "\n")) 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;         }      }  ?>

調用也很簡單的。簡單的例子：

代碼如下:

echo httpRequest('http://www.baidu.com');

總結：以上就是本篇文的全部內容，希望能對大家的學習有所協助。