Sanitize wordpress uploaded filenames

wordpress_sanitize_upload_filename.php

<?php
/**
* Include in your theme functions
*/

add_filter( 'sanitize_file_name', 'sanitize_uploaded_filename' );
function sanitize_uploaded_filename( $filename ) {
	$fileNewName = sanitize_title( pathinfo( $filename )['filename'] ) . '.' . pathinfo( $filename )['extension'];
	return $fileNewName;
}