获取当前目录:
getcwd();
// /mnt/qa/test
dirname(__FILE__);
// /mnt/qa/test
获取域名或主机地址
$_SERVER['HTTP_HOST'];
//daxiangtravel.com
获取网页地址
$_SERVER['PHP_SELF'];
// /qa/test/index.php
获取网址参数
$_SERVER["QUERY_STRING"];
// v=433
获取用户代理
$_SERVER['HTTP_REFERER'];
// http://daxiangtravel.com/qa/test/index.php?v=433
获取完整的url
'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
// http://daxiangtravel.com/qa/test/index.php?v=433
'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];
// http://daxiangtravel.com/qa/test/index.php?v=433
只取路径
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);
// http://daxiangtravel.com/qa/test
包含端口号的完整url
'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"]
.$_SERVER["REQUEST_URI"];
// http://daxiangtravel.com:80/qa/test/index.php?v=433
THE END