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\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']) {//未超时 

	               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; 

	       } 

	    } 

	?>

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。

php实现httpRequest的方法

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