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hi i'm new to php and i have problem with header i try to redirect to home page but when i use header nothing happend i tried it in anther page and work but i don't know why it don't work here

<?php session_start(); ?>
<?php ob_start();?>

<form action="index.php" method="POST">
    <table>
        <tr>
         <?php //value='$username ' this funcation will not reset username?>
            <td>username :</td><td><input type="text" name="user_name" value="<?php echo $username ?>" ></td>
        </tr>
        <tr>
            <td>Passwored :</td><td> <input type="password" name="pass"></td>
        </tr>
        <tr>
            <td><input type="submit" value="submit" name="submit"></td>
        </tr>
        <tr>
            <td><a href="register.php">new account</a></td>
        </tr>
    </table> 
</form>



<?php

    if(!empty($_POST['submit'])){

        if (isset($_POST['user_name'])&&isset($_POST['pass'])){

            $username =htmlentities($_POST['user_name']);
            $pass =htmlentities($_POST['pass']);

            if ((3>strlen($username))||(strlen($username)>20)){
                echo 'username must be long than 5 and  less than 20 ';
                exit();
            }

            if (6>$pass||$pass<20){
                echo " passwored must be long than 6 and  less than 20 ";
                exit(); 
            }

            $con=mysql_connect('localhost','root','fuckyou1.') || die("can't acsess database");

            $db = mysql_select_db("register");

            $query=mysql_query("select * from login where username='$username' and pass='$pass'");

            while ($result=mysql_fetch_assoc($query)){
                $id=$result['ID'];
                $db_username=$result['username'];
                $db_pass=$result['pass'];
                $session=$_SESSION['ID'];

                if ($db_username==$username&&$db_pass==$pass){
                    echo $username;
                    header('location:home.php');
                }else {
                    echo "user not found";
                }
            }
        }


    }
?>
<?php ob_flush();?>
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Last Post by xxhaissamxx
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