php 调用远程url的六种方法小结

1: 用file_get_contents 以get方式获取内容

<?php 
$url='http://www.baidu.com/'; 
$html=file_get_contents($url); 
//print_r($http_response_header); 
ec($html); 
printhr(); 
printarr($http_response_header); 
printhr(); 
?> 

2: 用fopen打开url, 以get方式获取内容

<? 
$fp=fopen($url,'r'); 
printarr(stream_get_meta_data($fp)); 
printhr(); 
while(!feof($fp)){ 
$result.=fgets($fp,1024); 
} 
echo"url body: $result"; 
printhr(); 
fclose($fp); 
?> 

3：用file_get_contents函数,以post方式获取url

<?php 
$data=array('foo'=>'bar'); 
$data=http_build_query($data); 

$opts=array( 
'http'=>array( 
'method'=>'POST', 
'header'=>"Content-type: application/x-www-form-urlencoded\r\n". 
"Content-Length: ".strlen($data)."\r\n", 
'content'=>$data 
), 
); 
$context=stream_context_create($opts); 
$html=file_get_contents('http://localhost/e/admin/test.html',false,$context); 
echo$html; 
?> 

4：用fsockopen函数打开url，以get方式获取完整的数据，包括header和body

<? 
functionget_url($url,$cookie=false){ 
$url=parse_url($url); 
$query=$url[path]."?".$url[query]; 
ec("Query:".$query); 
$fp=fsockopen($url[host],$url[port]?$url[port]:80,$errno,$errstr,30); 
if(!$fp){ 
returnfalse; 
}else{ 
$request="GET$queryHTTP/1.1\r\n"; 
$request.="Host:$url[host]\r\n"; 
$request.="Connection: Close\r\n"; 
if($cookie)$request.="Cookie: $cookie\n"; 
$request.="\r\n"; 
fwrite($fp,$request); 
while(!@feof($fp)){ 
$result.=@fgets($fp,1024); 
} 
fclose($fp); 
return$result; 
} 
} 
//获取url的html部分，去掉header 
functionGetUrlHTML($url,$cookie=false){ 
$rowdata=get_url($url,$cookie); 
if($rowdata) 
{ 
$body=stristr($rowdata,"\r\n\r\n"); 
$body=substr($body,4,strlen($body)); 
return$body; 
} 
returnfalse; 
} 
?> 

5：用fsockopen函数打开url，以POST方式获取完整的数据，包括header和body

<? 
functionHTTP_Post($URL,$data,$cookie,$referrer=""){ 
// parsing the given URL 
$URL_Info=parse_url($URL); 

// Building referrer 
if($referrer=="")// if not given use this script. as referrer 
$referrer="111"; 

// making string from $data 
foreach($dataas$key=>$value) 
$values[]="$key=".urlencode($value); 
$data_string=implode("&",$values); 

// Find out which port is needed - if not given use standard (=80) 
if(!isset($URL_Info["port"])) 
$URL_Info["port"]=80; 

// building POST-request: 
$request.="POST ".$URL_Info["path"]." HTTP/1.1\n"; 
$request.="Host: ".$URL_Info["host"]."\n"; 
$request.="Referer:$referer\n"; 
$request.="Content-type: application/x-www-form-urlencoded\n"; 
$request.="Content-length: ".strlen($data_string)."\n"; 
$request.="Connection: close\n"; 
$request.="Cookie: $cookie\n"; 
$request.="\n"; 
$request.=$data_string."\n"; 

$fp=fsockopen($URL_Info["host"],$URL_Info["port"]); 
fputs($fp,$request); 
while(!feof($fp)){ 
$result.=fgets($fp,1024); 
} 
fclose($fp); 
return$result; 
} 
printhr(); 
?> 

6:使用curl库，使用curl库之前，你可能需要查看一下php.ini，查看是否已经打开了curl扩展

<? 
$ch = curl_init(); 
$timeout = 5; 
curl_setopt ($ch, CURLOPT_URL, 'http://www.baidu.com/'); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
$file_contents = curl_exec($ch); 
curl_close($ch); 
echo $file_contents; 
?>