php发送get、post请求的6种方法简明总结

16-01-08 来源：[db:作者]

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这篇文章主要介绍了php发送get、post请求的6种方法简明总结，分别为使用file_get_contents 、fopen、fsockopen、curl来发送GET和POST请求，需要的朋友可以参考下。
方法1: 用file_get_contents 以get方式获取内容：

<?php 
$url='http://www.2cto.com/'; 
$html = file_get_contents($url); 
echo $html; 
?>

方法2: 用fopen打开url, 以get方式获取内容：

 


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

	

方法3：用file_get_contents函数,以post方式获取url

 


	
	<?php 
$data = array (‘foo' => ‘bar'); 
$data = http_build_query($data); 
 
$opts = array ( 
‘http' => array ( 
‘method' => ‘POST', 
‘header'=> “Content-type: application/x-www-form-urlencodedrn” . 
“Content-Length: ” . strlen($data) . “rn”, 
‘content' => $data
) 
); 
 
$context = stream_context_create($opts); 
$html = file_get_contents(‘http://localhost/e/admin/test.html', false, $context); 
 
echo $html; 
?>

	

方法4：用fsockopen函数打开url，以get方式获取完整的数据，包括header和body,fsockopen需要 PHP.ini 中 allow_url_fopen 选项开启

 


	
	<?php 
function get_url ($url,$cookie=false) 
{ 
$url = parse_url($url); 
$query = $url[path].”?”.$url[query]; 
echo “Query:”.$query; 
$fp = fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30); 
if (!$fp) { 
return false; 
} else { 
$request = “GET $query HTTP/1.1rn”; 
$request .= “Host: $url[host]rn”; 
$request .= “Connection: Closern”; 
if($cookie) $request.=”Cookie:  $cookien”; 
$request.=”rn”; 
fwrite($fp,$request); 
while(!@feof($fp)) { 
$result .= @fgets($fp, 1024); 
} 
fclose($fp); 
return $result; 
} 
} 
//获取url的html部分，去掉header 
function GetUrlHTML($url,$cookie=false) 
{ 
$rowdata = get_url($url,$cookie); 
if($rowdata) 
{ 
$body= stristr($rowdata,”rnrn”); 
$body=substr($body,4,strlen($body)); 
return $body; 
} 
 
return false; 
} 
?>

	

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

 


	
	<?php 
function HTTP_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 $data 
foreach($data as $key=>$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/1.1n”; 
$request.=”Host: “.$URL_Info["host"].”n”; 
$request.=”Referer: $referern”; 
$request.=”Content-type: application/x-www-form-urlencodedn”; 
$request.=”Content-length: “.strlen($data_string).”n”; 
$request.=”Connection: closen”; 
 
$request.=”Cookie:  $cookien”; 
 
$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; 
} 
 
?>

	

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

 
	<?php 
$ch = curl_init(); 
$timeout = 5; 
curl_setopt ($ch, CURLOPT_URL, ‘http://www.jb51.net/'); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
$file_contents = curl_exec($ch); 
curl_close($ch); 
 
echo $file_contents; 
?>

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