我的网站中有一个HTML表单，在每次页面刷新和网站访问时，表单都会提交并发送一封空白电子邮件。更奇怪的是，我在表单中有表单验证和必填字段，当我单击提交按钮时，必要的字段检查和其他验证相应地运行但是，当我刷新页面时 - 表单空白，没有输入 - 它提交表单和我收到一封空白电子邮件 - 如果能够在页面刷新时提交表单而没有输入值？希望这很清楚......下面是我的PHP和HTML表单。谢谢！
<?php // define variables and set to empty values
$nameErr = $emailErr = "";
$name = $email = $comment = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["name"])) {
$nameErr = "*Name is required";
} else {
$name = test_input($_POST["name"]);
// check if name only contains letters and whitespace
if (!preg_match("/^[a-zA-Z ]*$/",$name)) {
$nameErr = "*Only letters and white space allowed";
}
}
if (empty($_POST["email"])) {
$emailErr = "*Email is required";
} else {
$email = test_input($_POST["email"]);
// check if e-mail address is well-formed
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$emailErr = "*Invalid email format";
}
}
if (empty($_POST["comment"])) {
$comment = "";
} else {
$comment = test_input($_POST["comment"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
if(empty($nameErr) && empty($emailErr))
{
$myemail = 'doreen.jones@flavoredesign.com';
$name = $_POST['name'];
$email = $_POST['email'];
$company_name = $_POST['company_name'];
$phone = $_POST['phone'];
$budget = $_POST['budget'];
$timeline = $_POST['timeline'];
$services = implode(', ', $_POST['services']);
$comment = $_POST['comment'];
$source = $_POST['source'];
$to = $myemail;
$email_subject = "A Message From: $name \n \n";
$email_body = "You have received a new message. ".
"Here are the details:\n Name: $name \n Email: $email \n Company Name: $company_name \n Telephone: $phone \n Services of Interest: $services \n Budget: $budget \n Timeline: $timeline \n Message: $comment \n Source: $source";
$headers = "From: $myemail\n";
$headers .= "Reply-To: $email";
mail($to,$email_subject,$email_body,$headers);
//redirect to the 'thank you' page
header('Location: http://flavoredesign.com/index.php#contact_sec');
}
if(empty($nameErr) && empty($emailErr) && !empty($name) && !empty($email)) {
echo "<p class='thank_you'>Thank you! Your message has been received. A Flavoredesign representative will be in touch with you shortly!</p>";
}
?>
而Html是
<div id="contact_form">
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>#contact_sec" method="post">
<div class="container">
<div class="row">
<div class="col-lg-6 col-md-12" style="padding-left:0px !important;">
<span class="error">
<?php echo $nameErr;?>
</span>
<input type="text" name="name" placeholder=" Your Name*" value="<?php echo $name;?>">
<span class="error">
<?php echo $emailErr;?>
</span>
<input type="email" name="email" placeholder=" Your Email*" value="<?php echo $email;?>">
</div>
<div class="col-lg-6 col-md-12" style="padding-right:0px !important;">
<input type="text" name="company_name" placeholder=" Company Name">
<input type="tel" name="phone" placeholder=" Phone Number">
</div>
</div>
<br/>
<div class="row no-gutters" style="margin-left: -15px; margin-right: -15px;">
<div class="col-12">
<label>What services are you interested in? (select all that apply)
</label>
<div id="checkboxes">
<ul>
<li>
<input type="checkbox" id="c1" name="services[]" value="Website Design">
<label for="c1">Website Design
</label>
</li>
<li>
<input type="checkbox" id="c3" name="services[]" value="UI/UX Design">
<label for="c3">UI/UX Design
</label>
</li>
<li>
<input type="checkbox" id="c5" name="services[]" value="Print Design">
<label for="c5">Print Design
</label>
</li>
<li>
<input type="checkbox" id="c6" name="services[]" value="Logo & Identity Design">
<label for="c6">Logo & Identity Design
</label>
</li>
<li>
<input type="checkbox" id="c8" name="services[]" value="SEO & Marketing">
<label for="c8">SEO & Marketing
</label>
</li>
</ul>
</div>
</div>
</div>
<div class="row">
<div class="col-lg-6 col-md-12" style="padding-left:0px !important;">
<select name="budget">
<option selected="selected"> What's your budget?
</option>
<option value="-500"> less than $1,000
</option>
<option value="1000to5000"> $1,000 to $5,000
</option>
<option value="5000to10000"> $5,000 to $10,000
</option>
<option value="+10000"> more than $10,000
</option>
</select>
</div>
<div class="col-lg-6 col-md-12" style="padding-right:0px !important;">
<input type="text" name="timeline" placeholder=" How soon do you need your project completed?">
</div>
</div>
<div class="row">
<div class="col-12" style="padding-right:0px !important; padding-left:0px !important;">
<textarea name="comment" placeholder="Questions? Details? What else would you like me to know?"
<?php echo $comment;?>>
</textarea>
<select name="source">
<option selected="selected"> Where did you hear about Flavoredesign?
</option>
<option value="online search"> online search
</option>
<option value="from a friend"> from a friend
</option>
<option value="social media"> social media
</option>
<option value="media advertisment"> media advertisement
</option>
<option value="other"> other
</option>
</select>
</div>
</div>
</div>
<div id="submit">
<button type="submit" id="contact_button" class="buttons hvr-ripple-out">Submit
</button>
</div>
</form>
</div>