This has been bugging me all day and I've given up trying to figure it out for myself, but the answer's probably really obvious...

My contact form works fine, however I don't receive input for all fields. I only get name, phone, email and message. I've given the form fields a name attribute so I'm not sure what's happening.

Here is the HTML:

```html
<form name="sentMessage" id="contactForm" novalidate>
                        <div class="row">
                            <div class="col-md-6">

                               <div class="form-group">
                                    <input type="name" class="form-control" placeholder="Your Name *" name="name" id="name" required data-validation-required-message="Please enter your name.">
                                    <p class="help-block text-danger"></p>
                                </div>

                                <div class="form-group">
                                    <input type="phone" class="form-control" placeholder="Your Phone Number *" name="phone" id="phone" required data-validation-required-message="Please enter your phone number.">
                                    <p class="help-block text-danger"></p>
                                </div>

                                <div class="form-group">
                                    <input type="email" class="form-control" placeholder="Your Email *" name="email" id="email" required data-validation-required-message="Please enter your email address.">
                                    <p class="help-block text-danger"></p>
                                </div>

                                   <div class="form-group">
                                    <input type="text" class="form-control" name="suburb" placeholder="Your Suburb *" id="suburb" required data-validation-required-message="Please enter your address.">
                                    <p class="help-block text-danger"></p>
                                </div> 

                              <div class="select"> 
                               <div class="col-sm-6">
                                <div class="form-group">
        <select class="selectpicker" name="state" id="state" data-width="100%" data-height="100%" title="Choose State *" data-style="btn-primary">     
          <option>QLD</option>
          <option>NSW</option>
       </select>
    </div>    
          </div>
          </div>

                               <div class="right-form-column">
                                <div class="col-sm-6">
                                 <div class="form-group">
                                    <input type="number" class="form-control" placeholder="Post Code *" name="postcode" id="postcode" required data-validation-required-message="Please enter your post code.">
                                    <p class="help-block text-danger"></p>
                                 </div>                                              
                               </div>
          </div>                                                                                           
         </div>

                              <div class="col-md-6">
         <div class="select"> 
                               <div class="col-xs-6">
                                <div class="form-group">
        <select class="selectpicker" name="product1" id="product1" data-width="100%" data-height="100%" data-live-search="true" title="Choose Product" data-style="btn-primary">
           <optgroup label="100 Series">      
                <option>90mm Grey Standard</option>
                 </optgroup> 
              </select>
         </div>    
           </div>
         </div>

                               <div class="right-form-column">
                                <div class="col-xs-6">
                                 <div class="form-group">
                                    <input type="number" class="form-control" placeholder="Quantity" name="quantity1" id="quantity1">
                                    <p class="help-block text-danger"></p>
                                 </div>                                              
                               </div>
    </div>        

                            <div class="select">
                             <div class="col-xs-6">
                                <div class="form-group">
        <select class="selectpicker" name="product2" id="product2" data-width="100%" data-height="100%" data-live-search="true" title="Choose Product" data-style="btn-primary">
           <optgroup label="100 Series">      
                <option>90mm Grey Standard</option>
                 </optgroup> 
              </select>
        </div>    
          </div>
                                </div>

                                 <div class="right-form-column">
                                <div class="col-xs-6">
                                 <div class="form-group">
                                    <input type="number" class="form-control" placeholder="Quantity" name="quantity2" id="quantity2">
                                    <p class="help-block text-danger"></p>
                                 </div>                                              
                               </div>
    </div>     

                             <div class="select">
                             <div class="col-xs-6">
                                <div class="form-group">
         <select class="selectpicker" name="product3" id="product3" data-width="100%" data-height="100%" data-live-search="true" title="Choose Product" data-style="btn-primary">
           <optgroup label="100 Series">      
                <option>90mm Grey Standard</option>
                 </optgroup> 
              </select>
        </div>    
          </div>
                                </div>

                                 <div class="right-form-column">
                                <div class="col-xs-6">
                                 <div class="form-group">
                                    <input type="number" class="form-control" placeholder="Quantity" name="quantity3" id="quantity3">
                                    <p class="help-block text-danger"></p>
                                 </div>                                              
                               </div>
    </div>     

                                <div class="form-group">
                                    <textarea class="form-control" placeholder="Additional comments" name="message" id="message"></textarea>
                                    <p class="help-block text-danger"></p>
                                </div>
                            </div>

                            <div class="clearfix"></div>
                            <div class="col-lg-12 text-center">
                                <div id="success"></div>
                                <button type="submit" class="btn btn-xl" name="submit">submit</button>
                            </div>
                        </div>
                    </form>
```

And the PHP:

```
<?php
// check if fields passed are empty
if(empty($_POST['name'])        ||
   empty($_POST['phone'])       ||
   empty($_POST['email'])       ||
   empty($_POST['message']) ||
   !filter_var($_POST['email'],FILTER_VALIDATE_EMAIL))
{
    echo "No arguments Provided!";
    return false;
}

$name = $_POST['name'];
$phone = $_POST['phone'];
$email_address = $_POST['email'];
$message = $_POST['message'];

// create email body and send it    
$to = 'myname@mydomain.com'; // PUT YOUR EMAIL ADDRESS HERE
$email_subject = "P Services Contact Form:  $name"; // EDIT THE EMAIL SUBJECT LINE HERE
$email_body = "You have received a new message from your website's contact form.\n\n"."Here are the details: From: $name\n Phone: $phone\n E-Mail: $email_address\n Suburb: $suburb\n State: $state\n Post Code: $postcode\n Product: $product1\n Quantity: $quantity1\n Product: $product2\n Quantity: $quantity2\n Product: $product3\n Quantity: $quantity3\n Message:\n $message";
$headers = "From: noreply@yourdomain.com\n";
$headers .= "Reply-To: $email_address"; 
if(mail($to,$email_subject,$email_body,$headers)){ 
    echo "Mail sent successfully.";
} 
    else{ echo "Error.";
}        
?>

```