WampServer

hellou, I'm a biginer of php and I'm using wamp5 version 1.6.6...when i open my page in broswer which contain an textbox, it's show me all i write to the value option, for example : value="<?=(isset($_POST['model']) ? $_POST['model']:""?>" but, if i write with echo it's ok , for example : value="'.$_SESSION['model'].'" so what can i do!?....sorry for bad engli
Forum: WampServer English