PHP服务器如何获得客户端HTTP的请求头+php获取http请求头

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放到php环境中去，建个index.php


foreach (getallheaders() as $name => $value) {
    echo "$name: $value\n";
}
//跟具自己的需要来

echo getallheaders()['Host'];

//方法2


#测试网址:     http://localhost/blog/testurl.php?id=5


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


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


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


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


//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'];
#http://localhost/blog/testurl.php?id=5


//包含端口号的完整url
echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]; 
#http://localhost:80/blog/testurl.php?id=5


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






if (in_array("Mark", $people))
{
    echo "匹配已找到";
}
else
{
    echo "匹配未找到";
}