1 <?php
 2 $username=True;
 3 if(intval($_GET['username'])){
 4     preg_match("/[a-zA-Z0-9]*/", $_GET['username'],$username);
 5     if ($username) {
 6         echo "<center>username:USER</center><br/>";
 7     }
 8 }
 9 if (isset($_GET['name']) and isset($_GET['password'])){
10     if ($_GET['name']==$_GET["password"])
11         echo "账号密码不能一致";
12     else if(md5($_GET["name"])===md5($_GET["password"]))
13             if (is_numeric($_GET["id"])&&$_GET["id"]!=='36'&&!preg_match('/\s/', $_GET["id"])) 
14             {
15                 if ($_GET["id"]==36)
16                     die('<center>password:PASS</center>');
17             }
18         else
19             echo "密码错误！";
20 }
21 
22 ?>

http://127.0.0.1/test.php?username=12&name[]=1&password[]=2&id=36.0