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:
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:
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。
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