我实际是应用是这么写的,url为 /loadxml.php?naviid=5<?php $navid5="test"; echo ${'navid'.$_GET["naviiid"]}; ?>可是报错如下:Notice: Undefined index: naviiid in G:\freehost\test19\web\loadxml.php on line 3Notice: Undefined variable: navid in G:\freehost\test19\web\loadxml.php on line 3
$navid5="test";
echo ${'navid'.$_GET["naviiid"]};
?>可是报错如下:Notice: Undefined index: naviiid in G:\freehost\test19\web\loadxml.php on line 3Notice: Undefined variable: navid in G:\freehost\test19\web\loadxml.php on line 3