PHP代码获取网址参数的数据，请收藏。

<?

echo $_SERVER['HTTP_HOST']."<br>"; #localhost

echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php

echo $_SERVER["QUERY_STRING"]."<hr>"; #id=5

echo $_SERVER['HTTP_REFERER']."<br>";

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']."<br>";

echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']."<br>";

echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"]."<br>";

$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]."<br>";

echo dirname($url);

?>

举例，https://www.woailunwen.com/list.php?id=4

会获取到：

https://www.woailunwen.com也会获取到list.php?id=4