<?
//方法一//区分大小写
$id = $_REQUEST["id"];
$curArr = array(1,2,3,4,5);
if(in_array($id, $curArr)){
echo "nav01";//严格要加true,in_array($id, $curArr),true)
}else{
echo "2";
}
//方法二
$id = $_REQUEST["id"];
$curArr = array(1,2,3,4,5);
$tmpArr = array_flip($curArr);
if(isset($tmpArr[$id])){
echo "yes";
}else{
echo "no";
}
?>
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