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by **Admin** Sat Aug 08, 2015 9:31 am

CSDL

HTML

Code:: <table> <form action="" method="post" name="f2"> <tr><td> Nhap ten:</td><td><input type="text" placeholder='Nhap ten vao...' name="txtten" /></td></tr> <tr><td>Nhap mat khau:</td><td><input type="password" name="txtmatkhau" /></td></tr> <tr><td colspan="2" align="center"><input type="submit" name="sbdongy" value="Dong y"></td></tr> </form> </table

Xử lý PHP

Code:: <?php if(isset($_SESSION['username'])){ header("Location:index.php"); } if(isset($_REQUEST['sbdn'])){ $us=$_REQUEST['txtten']; $ps=md5($_REQUEST['txtmatkhau']); $sql="select * from tbltaikhoan where username='$us' and password='$ps'"; $rs=mysqli_query($kn,$sql); if(mysqli_num_rows($rs)>0){ $_SESSION['username']=$us; // dang ky voi trinh duyet header("Location: index.php"); } else echo "Ten hoac mat khau sai"; } ?>