Problema visualizzazione foto

[vash1981]

Ciao ragazzi, questo script permette di caricare il profilo immagine per gli utenti registrati. Quando carico la foto o meglio quando premo il tasto per visualizzarla, dopo averla caricata la pagina diventa bianca e solo quando faccio refresh mi fa vedere la foto . Per il resto tutto funziona correttamente. questo il codice. Grazie!!

<h2>Hello, <?php echo $user_data['first_name'].' ' . $user_data['last_name']; ?>!</h2>
        <div class="inner">
            <div class="profile">
                <?php
                
                if(isset($_FILES['profile']) == true)
                {
                     
                    if(empty($_FILES['profile']['name']) == true)
                    {
                        echo 'Please choose a file!';
                    }
                    else
                    {
                        $allowed = array('jpg', 'jpeg', 'gif', 'png');

                        $file_name = $_FILES['profile']['name'];
                        $file_size = $_FILES['profile']['size'];
                        $file_extn = strtolower(end(explode('.', $file_name)));
                        $file_temp = $_FILES['profile']['tmp_name'];



                        if(in_array($file_extn, $allowed) == true && $file_size<(1024*1024) == true)
                        {
                            change_profile_image($session_user_id, $file_temp, $file_extn);

                            //header('Location: ' . $current_file);
                             
                            exit();
                        }
                        else if($file_size<(1024*1024) == false)
                        {
                            echo  "Image file size max 1 MB"; 
                        }
                        else
                        {
                            echo 'Incorrect file type. Allowed: ';
                            echo implode(', ', $allowed);
                        }
                    }
                }
                if(file_exists($user_data['profile']))
                {
                    echo '[img]', $user_data['profile'], '[/img]';
                }
                else
                {
                    echo '[img]./images/profile/default.gif[/img]
';
                    echo '[b]Upload your picture[/b]';
                        
                }
                
                /*if(empty($user_data['profile']) == false)
                {
                    echo '[img]', $user_data['profile'], '[/img]';
                }*/
                 
                
                ?>
                
                <form action="" method="post" enctype="multipart/form-data">
                    <input type="file" name="profile" > <input type="submit">
                </form>
            </div>
            <ul>
                [*]
                    [url="logout.php"]Log out[/url]
                
                [*]
                    [url="<?php echo $user_data['username'] ?>"]Profile[/url]
                
                [*]
                    [url="changepassword.php"]Change password[/url]
                
                [*]
                    [url="settings.php"]Settings[/url]
                
            [/list]
        </div>
    </div>

Questa e la funzione:

function change_profile_image($user_id, $file_temp, $file_extn)
{
    $file_path = 'images/profile/' . substr(md5(time()), 0, 10) . '.' . $file_extn ;
    move_uploaded_file($file_temp, $file_path);
    mysql_query("UPDATE users SET profile = '" . $file_path .  "' WHERE user_id = "  . (int)$user_id);
}