PHP file upload, sending formdata object

I want to upload a file, send it to javascript formData object and than via ajax to some php script which will put the file into database. It works fine when i upload a file in profile php, send it to formData object in javascript and send it back to profile.php. Problem is that when i want to send formData object to some other php script which isn't profile.php, it doesn't work.

Here is my code:

profile.php

<form role="form" id="editUserProfile" method="post" action="" enctype="multipart/form-data">
    <input type="file" id="filename" name="filename" class="file-input" accept="image/*"/></a>
    <button type="submit">Save</button
</form>

javascript.js

    $('#editUserProfile').validate({
        submitHandler: function (form) {
            var aFormData = new FormData();

            aFormData.append("filename", $('#filename').get(0).files[0]);

            $.ajax({
                type: "POST",
                url: "script.php",
                data: aFormData,
                success: function(data){
                    window.location.reload(true);
                }
            })
        }
    });

And than I want to check in some other php (script.php) script if file was uploaded.

if(is_uploaded_file($_FILES['filename']['tmp_name']) && getimagesize($_FILES['filename']['tmp_name']) != false){
    $size = getimagesize($_FILES['filename']['tmp_name']);
    $type = $size['mime'];
    $imgfp = fopen($_FILES['filename']['tmp_name'], 'rb');
    $size = $size[3];
    $name = $_FILES['filename']['name'];
    $maxsize = 99999999;

    if($_FILES['userfile']['size'] < $maxsize ){
        $dbh = new PDO("mysql:host=localhost;dbname=test", 'root');
        $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

        $stmt = $dbh->prepare("INSERT INTO table (image_type ,image, image_size, image_name) VALUES (? ,?, ?, ?)");

        $stmt->bindParam(1, $type);
        $stmt->bindParam(2, $imgfp, PDO::PARAM_LOB);
        $stmt->bindParam(3, $size);
        $stmt->bindParam(4, $name);

        $stmt->execute();
    }else{
        throw new Exception("File Size Error");
    }
}