Accessing FormData in PHP results in an Array containing one entry solely

Question

I am trying to upload an image and a string to my server using an ajax call. I use FormData to combine the information. As a result of submitting the form I get a huge array containing only one entry where all of the information is stored inseparately and therefore is unusable.

This is my current html-file including the script:

<script>
    $(function () {
        $('form').on('submit', function (e) {

            var formData = new FormData($('form')[0]);

            e.preventDefault();

            //

            $.ajax({
                type: 'POST',
                url: './assets/php/upload.php',
                data: formData,
                processData: false,
                success: function (response) {
                    console.log(response);
                }
            });

        });

    });
</script>
<form enctype="multipart/form-data" id="form">
    <label>Specify Input</label></br>

    <input type="hidden" name="MAX_FILE_SIZE" value="3000000" />
    <input type="file" id="inputFile" name="inputFile">

    <label>Specify Output</label></br>
    <select name="outputType" id="outputFormat">
        <option value="VRT">VRT: Virtual Raster</option>
        <option value="GTiff">GTiff: GeoTIFF</option>
    </select>
    </br>
    <input type="submit" value="Convert" id="submitButton">
</form>

And my php-script which I expect to show an array containing the information in a separate entry each:

<?php

    echo var_dump($_POST);

This is the result I get in my console right now:

array(1) {
  ["------WebKitFormBoundary93Z6VA7AXgIaQJIK
Content-Disposition:_form-data;_name"]=>
  string(271307) ""MAX_FILE_SIZE"

3000000
------WebKitFormBoundary93Z6VA7AXgIaQJIK
Content-Disposition: form-data; name="inputFile"; filename="cea.tif"
Content-Type: image/tiff

//...
//lots of binary data containing the image
//...

------WebKitFormBoundary93Z6VA7AXgIaQJIK
Content-Disposition: form-data; name="outputType"

VRT
------WebKitFormBoundary93Z6VA7AXgIaQJIK--
"
}