我正在创建一个网页，其中有两个div(计费详细信息和航运详细信息)。加载页面时，将自动显示账单详细信息，而送货详细信息仍为空。我包含了两个单选按钮，允许用户选择送货详细信息是否与账单详细信息相同。如果用户从单选按钮中选择yes，那么相同的详细信息应该显示在发货详细信息中。注意:详细信息存储在数据库中，我使用php来获取显示的数据
目前，我只尝试使用
<?php if(isset($_POST'[shipping'] == 'yes')){echo $fname} ?>
的名字字段只是看看它是否工作，但我似乎不工作。
<div id="leftprofile">
<form id="au" method="post" action="../../../coursework/coursework/scripts/checkout.php">
<fieldset class="billing">
<legend>Billing Details</legend><br />
<label for="fname" class="reglabel">First Name:</label>
<input required name="fname" type="text" id="fname" value="<?php echo $fname ?>"/><br />
<label for="lname" class="reglabel">Last Name:</label>
<input required name="lname" type="text" id="lname" value="<?php echo $lname ?>"/><br />
<label for="address" class="reglabel">Address:</label>
<input required name="address" id="address" type="text" value="<?php echo $address ?>"/><br />
<label for="town" class="reglabel">Town:</label>
<input required name="town" id="town" type="text" value="<?php echo $town ?>"/><br />
<label for="postcode" class="reglabel">Post Code:</label>
<input required name="postcode" id="postcode" type="text" value="<?php echo $postcode ?>"/><br />
<label for="phone" class="reglabel">Phone:</label>
<input required name="phone" id="phone" type="text" value="<?php echo $phone ?>"/><br />
<label for="email" id="EmailLabel" class="reglabel">E-mail:</label>
<input required name="email" type="email" id="email" value="<?php echo $email ?>"/><br />
</fieldset>
</form>
</div>
<div id="rightprofile">
<form id="au" method="post" action="../../../coursework/coursework/scripts/checkout.php">
<fieldset class="billing">
<legend>Shipping Details</legend><br />
<form>
Same as billing address?
<input type="radio" name="shipping" id="yes" value="yes">Yes
<input type="radio" name="shipping" id="no" value="no">No<br/>
</form>
<label for="fname" class="reglabel">First Name:</label>
<input required name="fname" type="text" id="fname" value="<?php if(isset($_POST'[shipping'] == 'yes')){echo $fname} ?>"/><br />
<label for="lname" class="reglabel">Last Name:</label>
<input required name="lname" type="text" id="lname" /><br />
<label for="address" class="reglabel">Address:</label>
<input required name="address" id="address" type="text" /><br />
<label for="town" class="reglabel">Town:</label>
<input required name="town" id="town" type="text" /><br />
<label for="postcode" class="reglabel">Post Code:</label>
<input required name="postcode" id="postcode" type="text" /><br />
<label for="phone" class="reglabel">Phone:</label>
<input required name="phone" id="phone" type="text" /><br />
<label for="email" id="EmailLabel" class="reglabel">E-mail:</label>
<input required name="email" type="email" id="email" /><br />
</fieldset>
</form>
</div>
我为您编写了一些简化的示例代码。该站点包含一个表单，有两个输入字段(计费和发货)，以及一个复选框，用于检查发货信息是否与计费信息相同。如果复选框被选中，代码将简单地忽略输入'shipping'的任何内容。
这将达到您所要求的，至少从PHP的角度来看。如果你正在寻找更多的"复制数据在那些输入字段，到那些输入字段"在浏览器中实时，那么这是一个任务的Javascript，而不是PHP。
<?php
/* Check if anything was submitted */
if(isset($_POST))
{
/* Retrieve billing information */
$billing_name = $_POST['billing_name'];
$billing_addr = $_POST['billing_addr'];
/* Check if shipping same as billing */
if(isset($_POST['same']))
{
/* Shipping is the same as billing */
$shipping_name = $billing_name;
$shipping_addr = $billing_addr;
}
/* If not, set shipping to the posted value */
else
{
$shipping_name = $_POST['shipping_name'];
$shipping_addr = $_POST['shipping_addr'];
}
$insert = mysql_query(...);
}
?>
<form method="post" action="#" />
Billing information
<label for="billing_name">Name</label>
<input type="text" id="billing_name" name="billing_name" />
<label for="billing_addr">Addr</label>
<input type="text" id="billing_addr" name="billing_addr" />
<label for="same" />Is the shipping information the same as billing information?</label>
<input type="checkbox" id="same" name="same" />
Shipping information
<label for="shipping_name">Name</label>
<input type="text" id="shipping_name" name="shipping_name" />
<label for="shipping_addr">Addr</label>
<input type="text" id="shipping_addr" name="shipping_addr" />
<input type="submit" value="Register" />
</form>