我有一个联系人表格，我想在某人完成并提交信息后隐藏它。下面是代码。理想情况下，我希望隐藏HTML字段集标记之间的所有内容。我知道用jQuery可以做到这一点，但用PHP可以做到吗？
<form id="contact" method="post" action="index.php">
<fieldset>
<label for="name">Full Name<span class="red"> *</span></label>
<input type="text" name="name" title="Enter your name" required>
<label for="email">E-mail Address<span class="red"> *</span></label>
<input type="email" name="email" placeholder="yourname@domain.com" title="Enter your e-mail address" required>
<label for="phone">Phone Number</label>
<input type="tel" name="phone" title="Enter your phone number" placeholder="ex. (555) 555-5555">
<label for="message">Questions and Comments<span class="red"> *</span></label>
<textarea type="text" name="message" title="Enter your questions or comments" required></textarea>
<label>What is 4+2? (Anti-spam)<span class="red"> *</span></label>
<input type="text" name="human" placeholder="Answer Here" title="Answer Here" required>
<input type="submit" name="submit" class="button" id="submit" value="Send Us A Message" title="Send us a message" />
<p class="red">
* Indicates the field is required.
</p>
</fieldset>
<!-- Contact Form Details -->
<?php $name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$from = 'This message has been sent from your website.';
$to = 'user@domain.com';
$subject = 'From your contact form';
$human = $_POST['human'];
$body = " From: $name'n E-Mail: $email'n Message:'n $message";
if ($_POST['submit'] && $human == '6') {
if (mail($to, $subject, $body, $from)) {
echo '
<h2>Thank You!</h2>
<span class="message">
Your message has been sent!
</span>';
} else {
echo '
<h2>Oops!</h2>
<span class="message">
Something went wrong, go back and try again!
</span>';
}
} else if ($_POST['submit'] && $human != '6') {
echo '
<h2>Incorrect Answer!</h2>
<span class="message">
The correct answer is 6. Please try again.
</span>';
}
?>
</form>
更新：在尝试了一些建议后，我意识到由于表单提交后页面正在重新加载，因此试图隐藏表单是毫无意义的。您点击提交，表单消失，页面重新加载，表单再次出现。因此，我将from包围在一个容器中，并修改了CSS，因此消息显示在表单上方，这很好。谢谢大家的帮助。非常感谢！
成功时，设置一个变量：
$success = true;
然后围绕HTML表单：
<?php echo $success ? '<!--' : ''; ?>
// form here...
<?php echo $success ? '-->' : ''; ?>
试试这个：
if(!isset($_POST['submit']))
{
<form id="contact" method="post" action="index.php">
<!--Contents in between-->
</form>
}
还将您的html更改为：
<form id="contact" method="post" action="index.php">
<fieldset>
<label for="name">Full Name<span class="red"> *</span></label>
<input type="text" name="name" title="Enter your name" required>
<label for="email">E-mail Address<span class="red"> *</span></label>
<input type="email" name="email" placeholder="yourname@domain.com" title="Enter your e-mail address" required>
<label for="phone">Phone Number</label>
<input type="tel" name="phone" title="Enter your phone number" placeholder="ex. (555) 555-5555">
<label for="message">Questions and Comments<span class="red"> *</span></label>
<textarea type="text" name="message" title="Enter your questions or comments" required></textarea>
<label>What is 4+2? (Anti-spam)<span class="red"> *</span></label>
<input type="text" name="human" placeholder="Answer Here" title="Answer Here" required>
<input type="submit" name="submit" class="button" id="submit" value="Send Us A Message" title="Send us a message" />
<p class="red">
* Indicates the field is required.
</p>
</fieldset>
</form>
<!-- Contact Form Details -->
<?php $name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$from = 'This message has been sent from your website.';
$to = 'user@domain.com';
$subject = 'From your contact form';
$human = $_POST['human'];
$body = " From: $name'n E-Mail: $email'n Message:'n $message";
if ($_POST['submit'] && $human == '6') {
if (mail($to, $subject, $body, $from)) {
echo '
<h2>Thank You!</h2>
<span class="message">
Your message has been sent!
</span>';
} else {
echo '
<h2>Oops!</h2>
<span class="message">
Something went wrong, go back and try again!
</span>';
}
} else if ($_POST['submit'] && $human != '6') {
echo '
<h2>Incorrect Answer!</h2>
<span class="message">
The correct answer is 6. Please try again.
</span>';
}
?>
不要在<form>...</form> 中包含联系表格详细信息
为什么不将php代码放在表单上方并添加if条件？如果您想在整个浏览器会话中只显示一次表单，则必须使用php会话来存储标志。
<form id="contact" method="post" action="index.php">
<fieldset>
<!-- Contact Form Details -->
<?php
$success = false;
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$from = 'This message has been sent from your website.';
$to = 'user@domain.com';
$subject = 'From your contact form';
$human = $_POST['human'];
$body = " From: $name'n E-Mail: $email'n Message:'n $message";
if ($_POST['submit'] && $human == '6') {
if (mail($to, $subject, $body, $from)) {
$success = true;
echo '
<h2>Thank You!</h2>
<span class="message">
Your message has been sent!
</span>';
} else {
echo '
<h2>Oops!</h2>
<span class="message">
Something went wrong, go back and try again!
</span>';
}
} else if ($_POST['submit'] && $human != '6') {
echo '
<h2>Incorrect Answer!</h2>
<span class="message">
The correct answer is 6. Please try again.
</span>';
}
if ($success) {
?>
<label for="name">Full Name<span class="red"> *</span></label>
<input type="text" name="name" title="Enter your name" required>
<label for="email">E-mail Address<span class="red"> *</span></label>
<input type="email" name="email" placeholder="yourname@domain.com" title="Enter your e-mail address" required>
<label for="phone">Phone Number</label>
<input type="tel" name="phone" title="Enter your phone number" placeholder="ex. (555) 555-5555">
<label for="message">Questions and Comments<span class="red"> *</span></label>
<textarea type="text" name="message" title="Enter your questions or comments" required></textarea>
<label>What is 4+2? (Anti-spam)<span class="red"> *</span></label>
<input type="text" name="human" placeholder="Answer Here" title="Answer Here" required>
<input type="submit" name="submit" class="button" id="submit" value="Send Us A Message" title="Send us a message" />
<p class="red">
* Indicates the field is required.
</p>
<?php } ?>
</fieldset>
</form>