如果有人可以告诉我，我需要这方面的帮助，那将非常棒且很有帮助。
我试图通过复选框显示一个以上的值，PHP 中的此信息已发送到电子邮件。应用时，我可以让所选列表中的任何人单独工作
这是我的 PHP 和 HTML 代码，一切正常，只是程序只会发送所选列表中的一个，即使我选择了多个。
$ch1, $ch2, $ch3, $ch4,$ch5
PHP
<?php
if(isset($_POST['email'])) {
$email_to = "";
$email_subject = "";
function died($error) {
// Error Code
echo "We are very sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
// validation expected data exists
if(!isset($_POST['firstname']) ||
!isset($_POST['lastname']) ||
!isset($_POST['checkboxes']) ||
!isset($_POST['gender']) ||
!isset($_POST['email']) ||
!isset($_POST['subject']) ||
!isset($_POST['telephone']) ||
!isset($_POST['message'])) {
died('We are sorry, but there appears to be a problem with the form you submitted.');
}
$firstname = $_POST['firstname']; // required
$lastname = $_POST['lastname']; // required
$ch1 = 'unchecked'; // required
$ch2 = 'unchecked'; // required
$ch3 = 'unchecked'; // required
$ch4 = 'unchecked'; // required
$ch5 = 'unchecked'; // required
$male_status = 'unchecked'; // required
$female_status = 'unchecked'; // required
$email_from = $_POST['email']; // required
$subject = $_POST['subject']; // required
$telephone = $_POST['telephone']; // required
$message = $_POST['message']; // required
$error_message = "";
$email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
if(!preg_match($email_exp,$email_from)) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}
$string_exp = "/^[A-Za-z .'-]+$/";
if(!preg_match($string_exp,$firstname)) {
$error_message .= 'The First Name you entered does not appear to be valid.<br />';
}
if(!preg_match($string_exp,$lastname)) {
$error_message .= 'The Last Name you entered does not appear to be valid.<br />';
}
if(!preg_match($string_exp,$subject)) {
$error_message .= 'The Subject you entered does not appear to be valid.<br />';
}
if (isset($_POST['checkboxes'])) {
$selected_checkboxes = $_POST['checkboxes'];
if (isset($_POST['ch1'])) {
$ch1 = $_POST['checkboxes'];
if ($ch1 == 'googlechrome') {
$ch1 = 'checked';
}
}
if (isset($_POST['ch2'])) {
$ch2 = $_POST['checkboxes'];
if ($ch2 == 'firefox') {
$ch2 = 'checked';
}
}
if (isset($_POST['ch3'])) {
$ch3 = $_POST['checkboxes'];
if ($ch3 == 'safari') {
$ch3 = 'checked';
}
}
if (isset($_POST['ch4'])) {
$ch4 = $_POST['checkboxes'];
if ($ch4 == 'internetexplorer') {
$ch4 = 'checked';
}
}
if (isset($_POST['ch5'])) {
$ch5 = $_POST['checkboxes'];
if ($ch5 == 'opera') {
$ch5 = 'checked';
}
}
}
if (isset($_POST['gender'])) {
$selected_radio = $_POST['gender'];
if ($selected_radio == 'male') {
$male_status = 'checked';
}
else if ($selected_radio == 'female') {
$female_status = 'checked';
}
}
if(strlen($message) < 2) {
$error_message .= 'The Message you entered do not appear to be valid.<br />';
}
if(strlen($error_message) > 0) {
died($error_message);
}
$email_message = "Form details below.\n\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}
$email_message .= "First Name: ".clean_string($firstname)."\n";
$email_message .= "Last Name: ".clean_string($lastname)."\n";
$email_message .= "Gender: ".clean_string($selected_radio)."\n";
$email_message .= "Telephone: ".clean_string($telephone).
"\n";
$email_message .= "Email: ".clean_string($email_from).
"\n";
$email_message .= "Subject: ".clean_string($subject).
"\n";
$email_message .= "Browsers Used: ".clean_string($selected_checkboxes)."\n";
$email_message .= "Message: ".clean_string($message).
"\n";
// create email headers
$headers = 'From: '.$email_from."\r\n".
'Reply-To: '.$email_from."\r\n" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);
?>
Thank you for contacting us. We will be in touch with you very soon.
<?php
}
?>
HTML
<form id="contact" name="contact" action="contact.php" method="post">
<p>
<label for="firstname">First Name *<br>
</label>
<input type="text" name="firstname" maxlength="50" size="30" id="firstname" placeholder="First Name" required autofocus>
<label for="lastname"><br>
<br>
Last Name *<br>
</label>
<input type="text" name="lastname" maxlength="50" size="30" id="lastname" placeholder="Last Name" required>
<label for="email"><br>
<br>
Email Address *<br>
</label>
<input type="text" name="email" maxlength="80" size="30" id="email" placeholder="example@domain.com" required>
<label for="telephone"><br>
<br>
Telephone <br>
</label>
<input type="text" name="telephone" maxlength="30" size="30" id="subject" placeholder="Phone Number" required>
<br>
<br>
<label for="subject">Subject *</label>
<br>
<input type="text" name="subject" maxlength="30" size="30" id="subject" placeholder="Hello" required>
<br>
<br>
<Input type = "Radio" Name ="gender" value= "Male">Male
<Input type = "Radio" Name ="gender" value= "Female" >Female
<br>
</p>
<p>"What browser are you using, to view this website"<br>
<Input type = "Checkbox" Name ="checkboxes" value="Google Chrome">Google Chrome
<Input type = "Checkbox" Name ="checkboxes" value="Firefox">Firefox
<Input type = "Checkbox" Name ="checkboxes" value="Safari">Safari
<Input type = "Checkbox" Name ="checkboxes" value="Internet Explorer" >Internet Explorer
<Input type = "Checkbox" Name ="checkboxes" value="Opera" >Opera
<br>
<br>
Message *<br>
</label>
<textarea name="message" maxlength="1000" cols="90" rows="6" id="message" placeholder="Type message here" required></textarea>
<br>
<input type="submit" value="Submit">
</p>
</form>