<?php
header('Content-Type:text/html;charset=GBK');//避免输出乱码
if($_GET["id"])
{
sleep(1);
$conn=mysql_connect('localhost','root','') or die(mysql_error());
mysql_select_db('test',$conn) or die (mysql_error());
mysql_query("set names 'GBK'");
echo $sql="select * from `reg` where `name`='$_GET[id]'";
$query=mysql_query($sql);
if(is_array(mysql_fetch_row($query)))
{
echo "用户名已经存在";
}else
{
echo "可以注册";
}
}
?>
