Untitled

<?php
   ob_start();
   require_once "connection.php";
   session_start();
   if($_SERVER["REQUEST_METHOD"] == "POST") {
      $myusername = mysqli_real_escape_string($link,$_POST['username']);
      $mypassword = mysqli_real_escape_string($link,$_POST['password']);
      $query = "SELECT * FROM admin WHERE login = '$myusername' and password = '$mypassword'";
      $result = mysqli_query($link,$query);
      $row = mysqli_fetch_array($result,MYSQLI_ASSOC);
      $active = $row['login'];
      $count = mysqli_num_rows($result);
      if($count == 1) {
         $_SESSION['login_user'] = $myusername;
         error_reporting(E_ALL);
         header("Location:  panel.php");
         die();
      }else {
         $error = "Wrong login or password";
      }
   }
?>
<html>

   <head>
      <title>Login Page</title>
   </head>

   <body bgcolor = "#FFFFFF">
      <div align = "center">
         <div style = "width:300px; border: solid 1px #333333; " align = "left">
            <div style = "background-color:#333333; color:#FFFFFF; padding:3px;"><b>Login</b></div>

            <div style = "margin:30px">

               <form action = "" method = "post">
                  <label>UserName  :</label><input type = "text" name = "username" class = "box"/><br /><br />
                  <label>Password  :</label><input type = "password" name = "password" class = "box" /><br/><br />
                  <input type = "submit" value = " Submit "/><br />
               </form>

               <div style = "font-size:11px; color:#cc0000; margin-top:10px"><?php echo $error; ?></div>

            </div>

         </div>

      </div>

   </body>
</html>