Make File Upload Field Optional on Contact Form - php

Question

I have a basic HTML/PHP web form. Everything works fine when I fill out all fields, except I want to make the file upload optional, not required. I have taken "required" off of the form html for the upload. I checked my handler.php and it does not say that field is required. I checked the formhandler.php and it says that attachments are null. I have looked through similar questions, but any of the more complex solutions I am probably implementing incorrectly. I've expended my knowledge of php looking for a solution. What am I missing?
Here is the html of the form:
<div class="row pb6">
<div class="col-md-6 offset-md-3">
<form role="form" method="post" id="reused_form" enctype="multipart/form-data" >
<div class="form-group">
<label for="name"> Name:</label>
<input type="text" class="form-control" id="name" name="name" required maxlength="50">
</div>
<div class="form-group">
<label for="email"> Email:</label>
<input type="email" class="form-control" id="email" name="email" required maxlength="50">
</div>
<div class="form-group">
<label for="tel"> Phone: </label>
<input type="tel" class="form-control" id="tel" name="tel" maxlength="50">
</div>
<div class="form-group">
<label for="name"> Message:</label>
<textarea class="form-control" type="textarea" name="message" id="message" placeholder="We want to hear all about your performance! Also, please include the date you need the music." maxlength="6000" rows="7"></textarea>
</div>
<div class="form-group">
<label for="file">File Upload (optional)</label>
<input type="file" class="form-control" id="image" name="image">
</div>
<button type="submit" class="btn btn-lg btn-success pull-right" id="btnContactUs">Post It! →</button>
</form>
<div id="success_message" style="width:100%; height:100%; display:none; "> <h3>Sent your message successfully!</h3> </div>
<div id="error_message" style="width:100%; height:100%; display:none; "><h3>Error</h3>We are very sorry. There was an error sending your form. Email us and we will send you a free demo.</div>
</div>
</div>
</div>
And here is the handler.php:
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
/*
Tested working with PHP5.4 and above (including PHP 7 )
*/
require_once './vendor/autoload.php';
use FormGuide\Handlx\FormHandler;
$pp = new FormHandler();
$validator = $pp->getValidator();
$validator->fields(['name','email','tel'])->areRequired()->maxLength(50);
$validator->field('email')->isEmail();
$validator->field('message')->maxLength(6000);
if($_FILES['image']){ $pp->attachFiles(['image']); }
$pp->sendEmailTo('email'); //
echo $pp->process($_POST);
after code edit:
1)Chrome and Firefox will send form, Safari will not.
2)All browsers show a perpetual "Sending" message, and do not show a success or failure message for the form.
3) Forms send WITH attachments will not send the form with attachment to email, only the form alone.

Answer 1

You are trying to attach the image whether it exists or not with $pp->attachFiles(['image']);. You should first check if it does indeed exists and only attach it if it does like so:
if($_FILES['image']){
$pp->attachFiles(['image']);
}