我网站上的PHP联系表单模式正在发送电子邮件，但如果字段留空或者在验证某人是否为人时输入了错误的数字，则不会显示错误消息。此外，单击“提交”后，将转到空白页面。
这是我的HTML文件：
<!-- Modal -->
<div id="contactModal" class="modal fade" tabindex="-1" role="dialog" aria-labelledby="contactModalLabel" aria-hidden="true">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title">Fill everything out below!</h4>
</div>
<div class="modal-body">
<div class="container-fluid">
<div class="row">
<div class="col-xs-12 col-sm-10 col-sm-offset-1">
<form class="form-horizontal" role="form" method="post" action="mailer.php">
<div class="form-group">
<label for="name" class="col-sm-2 control-label">Name</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="name" name="name" placeholder="First & Last Name" value="<?php echo htmlspecialchars($_POST['name']); ?>">
<?php echo "<p class='text-danger'>$errName</p>";?>
</div>
</div>
<div class="form-group">
<label for="email" class="col-sm-2 control-label">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" id="email" name="email" placeholder="example@domain.com" value="<?php echo htmlspecialchars($_POST['email']); ?>">
<?php echo "<p class='text-danger'>$errEmail</p>";?>
</div>
</div>
<div class="form-group">
<label for="message" class="col-sm-2 control-label">Message</label>
<div class="col-sm-10">
<textarea class="form-control" rows="4" name="message">
<?php echo htmlspecialchars($_POST[ 'message']);?>
</textarea>
<?php echo "<p class='text-danger'>$errMessage</p>";?>
</div>
</div>
<div class="form-group">
<label for="human" class="col-sm-2 control-label">2 + 3 = ?</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="human" name="human" placeholder="Your Answer">
<?php echo "<p class='text-danger'>$errHuman</p>";?>
</div>
</div>
<div class="form-group">
<div class="col-sm-10 col-sm-offset-2">
<input id="submit" name="submit" type="submit" value="Send" class="btn btn-primary">
</div>
</div>
<div class="form-group">
<div class="col-sm-10 col-sm-offset-2">
<?php echo $result; ?>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
<!-- End of Modal body -->
</div>
<!-- End of Modal content -->
</div>
<!-- End of Modal dialog -->
</div>
<!-- End of Modal -->
这是我的PHP文件：
<?php
if (isset($_POST["submit"])) {
$name = $_POST['name'];
$email = $_POST['email'];
$message = $_POST['message'];
$human = intval($_POST['human']);
$from = 'Contact Form';
$to = 'myemail@gmail.com';
$subject = 'Message from porfolio site ';
$body = "From: $name\n E-Mail: $email\n Message:\n $message";
// Check if name has been entered
if (!$_POST['name']) {
$errName = 'Please enter your name';
}
// Check if email has been entered and is valid
if (!$_POST['email'] || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
$errEmail = 'Please enter a valid email address';
}
//Check if message has been entered
if (!$_POST['message']) {
$errMessage = 'Please enter your message';
}
//Check if simple anti-bot test is correct
if ($human !== 5) {
$errHuman = 'Your anti-spam is incorrect';
}
// If there are no errors, send the email
if (!$errName && !$errEmail && !$errMessage && !$errHuman) {
if (mail ($to, $subject, $body, $from)) {
$result='<div class="alert alert-success">Thank You! I will be in touch</div>';
} else {
$result='<div class="alert alert-danger">Sorry there was an error sending your message. Please try again later</div>';
}
}
}
?>
你们都知道这里会发生什么吗？
答案 0 :(得分：0)
您的字段可能是空字符串，可以通过(!$_POST['field'])测试。相反，请使用if(!empty($_POST['field']))。这样可以确保该字段存在，不是0，为空，或者是空字符串。
例如：
if (!empty($_POST['name'])) {
$errName = 'Please enter your name';
}