php實現httpRequest的方法

2024-05-04 23:32:21

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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

本文實例講述了php實現httpRequest的方法。分享給大家供大家參考。具體如下：

想從學校圖書館的網站上抓取數據處理之后在返回給瀏覽器，試了不少方法。首先試了http_request()，但是這個學院pecl_http支持，后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。后來看到了函數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：

復制代碼代碼如下:

		<?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(!$status['timed_out']) {//未超時  
		               while (!feof($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;  
		       }  
		    }  
		?>