ÍøÒ³Ìáʾ Notice: Undefined variable: sql in D:\web\www\cs\login.php on line 8
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<?php
$username=$_POST['username'];
$password=$_POST['password'];
//$password=md5($password);
echo $username,$password;
include('db.php');
$sql='SELECT * FROM `user` WHERE username='$username' and password='$password' limit 1';
echo "$sql";
$query=mysql_query($sql);
?>
------½â¾ö·½°¸--------------------
$sql=¡°SELECT * FROM `user` WHERE username='$username' and password='$password' limit 1¡±;