PHP file upload

<?php

$filedname = 'albumart';

if (isset($_FILES[$filedname]['name'])) {

    $fileName   = $_FILES[$filedname]['name'];

    $fileTmpLoc = $_FILES[$filedname]['tmp_name'];

    $fileSize   = $_FILES[$filedname]['size'];

    $fileType   = $_FILES[$filedname]['type'];

    $fileErrMsg = $_FILES[$filedname]['error'];

    $allowed    = array(

        'gif',

        'png',

        'jpg',

        'jpeg'

    );

    $ext        = pathinfo($fileName, PATHINFO_EXTENSION);

    if ($fileSize > 50000) {

        if (!in_array($ext, $allowed)) {

            echo 'Sorry, only JPG, JPEG, PNG & GIF files are allowed.';

        } else {

            $dir = "upload";

            if (move_uploaded_file($fileTmpLoc, "$dir/$fileName")) {

                $path = "upload/$fileName";

                echo $path;

            } else

                echo "Folder is there, but file not uploaded some error";

        }

    } else {

        echo "Invalid size";

    }

} else {

    echo "File Upload Error";

}

?>