php处理http post/get请求

$method =$_SERVER['REQUEST_METHOD'];
$data = '';
if ($method == 'GET')
{
$data = $_SERVER['QUERY_STRING'];
}
else if ($method == 'POST')
{
$data = file_get_contents("php://input");
}
else
{
$logger->error('unknown http method. url: ' . $_SERVER['REQUEST_URI']);
}

//获取域名或主机地址
echo $_SERVER['HTTP_HOST']."<br>"; #localhost

//获取网页地址
echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php

//获取网址参数
echo $_SERVER["QUERY_STRING"]."<br>"; #id=5

//获取用户代理
echo $_SERVER['HTTP_REFERER']."<br>";

//获取完整的url
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];

//包含端口号的完整url
echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];

//只取路径
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);