php发送get、post请求的6种方法简明总结

方法1: 用file_get_contents 以get方式获取内容：

<?php
$url='http://www.51growup.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://www.51growup.com/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.51growup.com/'); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch); 
curl_close($ch); 
echo $file_contents; 
?>