//你可以对某个页面的按钮进行控制，一下是订单提交按钮的控制

<?php

if($_SESSION['cart']->show_total() < 400 )//订单每笔最大限额 默认币种美元就是400美元意思

{

?>

<?php echo zen_image_submit(BUTTON_IMAGE_SUBMIT, BUTTON_CONFIRM_ORDER_ALT,'class="forward"'); ?>

<?php

}else{

echo "Tips:To protect the safety of the customer's credit card, online payment per order cannot exceed $400.Please to reduce the amount of order!  ".zen_image_submit(BUTTON_IMAGE_SUBMIT, BUTTON_CONFIRM_ORDER_ALT,'class="forward" disabled');

}

?>