提交表单时，将电子邮件地址从第一个表单传递到第二个表单

Question

>我有两个表单，第一个被提交，然后页面重新加载并显示第二个。我遇到的问题是将电子邮件地址从第一个表单传递到第二个表单。在不干扰我的操作或将其从 POST 更改为 GET 的情况下执行此操作的最佳方法是什么？

<?php if(!isset($_POST['crowd_email'])){ ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding.php' ); ?>">
<input type="text" name="crowd_email" class="crowd_email" value="" placeholder="Email address">
<input type="submit" class="register-btn" value="Register Interest" name="submit">
</form>
<?php } else { ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding-extra.php' ); ?>">
<input type="text" name="first_name" class="crowd_email extra-info" value="" placeholder="First name">
<input type="text" name="tel_no" class="crowd_email extra-info" value="" placeholder="Telephone number">
<input type="text" name="amount" class="crowd_email extra-info" value="" placeholder="Amount to invest">
<input type="submit" class="register-btn" value="Register Interest" name="submitextra">
</form>
<?php } ?>

Answer 1

1(在第二个表单中添加一个隐藏字段。

2( 在呈现第二个表单时，将电子邮件地址的值(从第一个表单提交(添加到隐藏字段中。

例如

<?php if(!isset($_POST['crowd_email'])){ ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding.php' ); ?>">
<input type="text" name="crowd_email" class="crowd_email" value="" placeholder="Email address">
<input type="submit" class="register-btn" value="Register Interest" name="submit">
</form>
<?php } else { ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding-extra.php' ); ?>">
<input type="text" name="first_name" class="crowd_email extra-info" value="" placeholder="First name">
<input type="text" name="tel_no" class="crowd_email extra-info" value="" placeholder="Telephone number">
<input type="text" name="amount" class="crowd_email extra-info" value="" placeholder="Amount to invest">
<input type="hidden" name="email" value="<?php echo $_POST["crowd_email"]; ?>" />
<input type="submit" class="register-btn" value="Register Interest" name="submitextra">
</form>
<?php } ?>

这样，当您提交第二个表单时，电子邮件字段将与其余新数据一起提交。

Answer 2

您只需在包含电子邮件值的第二个表单中添加隐藏输入，并从第一次提交时为其提供值

<?php if(!isset($_POST['crowd_email'])){ ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding.php' ); ?>">
<input type="text" name="crowd_email" class="crowd_email" value="" placeholder="Email address">
<input type="submit" class="register-btn" value="Register Interest" name="submit">
</form>
<?php } else { ?>
<form id="form" method="POST" action="<?php require( COMMON_PATH . '/components/crowdfunding-extra.php' ); ?>">
<!-- New line to hold the email invisbly -->
<input type="hidden" name="crowd-email" value="<?php echo $_POST['crowd_email']; ?>"/>

<input type="text" name="first_name" class="crowd_email extra-info" value="" placeholder="First name">
<input type="text" name="tel_no" class="crowd_email extra-info" value="" placeholder="Telephone number">
<input type="text" name="amount" class="crowd_email extra-info" value="" placeholder="Amount to invest">
<input type="submit" class="register-btn" value="Register Interest" name="submitextra">
</form>
<?php } ?>