测试URL：http://localhost/sangsir/mani...//获取域名或主机地址echo$_SERVER['HTTP_HOST'];#localhost//获取网页地址echo$_SERVER['PHP_SELF'];#/sangsir/manito.php//获取URL参数echo$_SERVER["QUERY_STRING"];#id=1//获取完整的urlcho'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];//第一个echo'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];//第二个#http://localhost/sangsir/manito.php?id=1//完整的urlcho包括端口号'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];#http://localhost:80/sangsir/manito.php?id=1//只取路径$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];echodirname($url);#http://localhost/sangsir
