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classHttpRequest,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:
<?php /** *ResposeAHttpRequest * *@paramstring$url *@paramarray$post *@paramstring$method *@parambool$returnHeader *@paramstring$cookie *@parambool$bysocket *@paramstring$ip *@paraminteger$timeout *@parambool$block *@returnstringResponse */ functionhttpRequest($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; $out="POST$pathHTTP/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{ $out="GET$pathHTTP/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:
echohttpRequest('http://www.baidu.com');
希望本文所述对大家的php程序设计有所帮助。