#测试网址: http:
echo $_SERVER[‘HTTP_HOST‘]."<br>"; #localhost
echo $_SERVER[‘PHP_SELF‘]."<br>"; #/blog/testurl.php
echo $_SERVER["QUERY_STRING"]."<br>"; #id=5
echo $_SERVER[‘HTTP_REFERER‘]."<br>";
echo ‘http://‘.$_SERVER[‘HTTP_HOST‘].$_SERVER[‘REQUEST_URI‘];
echo ‘http://‘.$_SERVER[‘HTTP_HOST‘].$_SERVER[‘PHP_SELF‘].‘?‘.$_SERVER[‘QUERY_STRING‘];
#http:
echo ‘http://‘.$_SERVER[‘SERVER_NAME‘].‘:‘.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
#http:
$url=‘http://‘.$_SERVER[‘SERVER_NAME‘].$_SERVER["REQUEST_URI"];
echo dirname($url);
#http:
