Вот как тут:
Вот форма
<form action="include/handler.php" method="post">
<label>
Your name *
<input type="text" name="name" autocomplete="off" value="<?php echo $_SESSION['name']; ?>">
<p><?php echo $_SESSION['val_errors']['name']; ?></p>
</label>
<label>
Your address *
<input type="text" name="address" autocomplete="off" value="<?php echo $_SESSION['address']; ?>">
<p><?php echo $_SESSION['val_errors']['address']; ?></p>
</label>
<label>
Your city *
<input type="text" name="city" autocomplete="off" value="<?php echo $_SESSION['city']; ?>">
<p><?php echo $_SESSION['val_errors']['city']; ?></p>
</label>
<label>
Your postnumber *
<input type="text" name="postnumber" autocomplete="off" value="<?php echo $_SESSION['postnumber']; ?>">
<p><?php echo $_SESSION['val_errors']['postnumber']; ?></p>
</label>
<label>
Your phone *
<input type="text" name="phone" autocomplete="off" value="<?php echo $_SESSION['phone']; ?>">
<p><?php echo $_SESSION['val_errors']['phone']; ?></p>
</label>
<label>
Your email address *
<input type="text" name="email" autocomplete="off" value="<?php echo $_SESSION['email']; ?>">
<p><?php echo $_SESSION['val_errors']['email']; ?></p>
</label>
<label>
Your message *
<textarea name="message" rows="8"><?php echo $_SESSION['message']; ?></textarea>
</label>
<input type="hidden" name="action" value="messages">
<input type="submit" name="submit" value="Send">
<p class="muted">* means a requered field</p>
</form>