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。