<?php
$users = array("sd110","wk110","hr110");
$user = $_REQUEST["u"];
$is_exsit = false;

if($user == ""){
    echo "该用户不能为空!";
    return;
}

foreach ($users as $u) {
    if($u == $user){
        $is_exsit = true;
    break;
    }
}

if($is_exsit){
   echo "该用户已注册";
}else{
   echo "success";
}
?>
以上如何转ASP?

<%
 dim asparray,user,u,isexsit,i
asparray = Array("sd110","wk110","hr110")
user=request("u")
isexsit=false
if user="" then
 response.write "该用户不能为空!"
 response.end
end if
for i=0 to ubound(asparray)-1
    if(asparray(i)=user) then
       response.write "该用户已注册!"
    else
       response.write "success!"
    end if
next
%>
拿这个去试试，如果有问题再反馈！

不好意思，漏写一段，更正一下！

<%
dim asparray,user,u,isexsit,i
asparray = Array("sd110","wk110","hr110")
user=request("u")
isexsit=false
if user="" then
response.write "该用户不能为空!"
response.end
end if
for i=0 to ubound(asparray)-1
    if(asparray(i)=user) then
     isexsit=true
     exit for
    end if

 next
if (isexsit=true)
   response.write "该用户已注册!"
else
   response.write "success!"
end if
%>

不知为何还是不行 特打包，还请多指教，这个问题搞得头都大了，哎，谁让我喜欢ASP呢