发送php电子邮件时为空

Question

When i send an email using the contact form, the email its self is blank (no subject and no message or anything!) The email sends perfectly to my gmail but as mentioned, no subject etc.

JS

$('#contactform').submit(function(){
    var action = $(this).attr('action');
    $("#message").slideUp(250,function() {
        $('#message').hide();
        $('#submit')
            .after('<img src="img/assets/cbp-loading.gif" class="loader" />')
            .attr('disabled','disabled');
        $.post(action, {
            name: $('#name').val(),
            email: $('#email').val(),
            subject: $('#subject').val(),
            comments: $('#comments').val(),
        },
            function(data){
                document.getElementById('message').innerHTML = data;
                $('#message').slideDown(250);
                $('#contactform img.loader').fadeOut('slow',function(){$(this).remove()});
                $('#submit').removeAttr('disabled');
                if(data.match('success') != null) $('#contactform').slideUp(850, 'easeInOutExpo');
            }
        );
    });

PHP

<?php
$name = isset($_POST['name']) ? $_POST['name'] : '';
$email = isset($_POST['_replyto']) ? $_POST['_replyto'] : '';
$subject = isset($_POST['_subject']) ? $_POST['_subject'] : '';
$comments = isset($_POST['comments']) ? $_POST['comments'] : '';

$to = 'WhereTheInfoWillBeSent@gmail.com';
$subject = $subject;
$comments = "From: " . $name . ", " . $email . "\r\n \r\n" . "comments: " . $comments;
if (mail($to, $email, $subject, $comments)) {
    echo "Thanks for contacting us, we will get back to you soon!";
} else {
    echo "Sorry, there was an error sending the email. Please ensure you have filled out the form correctly and try again!";
}

HTML

form method="post" action="contact-form.php" name="contactform" id="contactform">
                            <fieldset>
                                    <input name="name" type="text" id="name" placeholder="Name"/> 
                                    <input name="email" type="text" id="email" placeholder="Email"/>  
                                    <input name="subject" type="text" id="subject" placeholder="Subject"/> 
                            </fieldset>
                            <fieldset> 
                                    <textarea name="comments" cols="40" rows="3" id="comments" placeholder="Message"></textarea>
                            </fieldset>
                            <input type="submit" class="submit" id="submit" value="Send Message" />
                        </form>
                    </div>  

Answer 1

Isn't it obvious, the data you posting is different from what you expecting.

{
     name: $('#name').val(),
     email: $('#email').val(),
     subject: $('#subject').val(),
     comments: $('#comments').val(),
}

It means that only these fields with be available in $_POST . Now either you change key name here in JS or change it in PHP like.

$email = isset($_POST['email']) ? $_POST['email'] : '';
$subject = isset($_POST['subject']) ? $_POST['subject'] : '';

Answer 2

In addition to what @anwerjunaid said, you need to change the order of one line of your PHP:

This:

    if (mail($to, $email, $subject, $comments)) {
    echo "Thanks for contacting us, we will get back to you soon!";
} else {
    echo "Sorry, there was an error sending the email. Please ensure you have filled out the form correctly and try again!";
}

Should be:

if (mail($to, $subject, $comments)) {
    echo "Thanks for contacting us, we will get back to you soon!";
} else {
    echo "Sorry, there was an error sending the email. Please ensure you have filled out the form correctly and try again!";
}

The order needs to be recipient, email subject, and the message content.

If you want to include a from or reply to, then add something like this:

$headers = 'From: WhereTheInfoWillBeSent@gmail.com' . "\r\n" .
'Reply-To: WhereTheInfoWillBeSent@gmail.com' . "\r\n" .
'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $comments, $headers);