LobbySIO/autoload.php

<?php
/*
 * Copyright (C) 2018 josh.north
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

//Autoloader
spl_autoload_register( function( $class ) {
    $prefix = 'App\\LobbySIO\\';
	$base_dir = __DIR__ . '/src/';
	$len = strlen( $prefix );
	if ( strncmp( $prefix, $class, $len ) !== 0 ) {
		return;
	}
	$class_name = str_replace( $prefix, '', $class );
	$file = $base_dir . str_replace('\\', '/', $class_name ) . '.php';
    if( file_exists( $file ) ) {
		require $file;
	}
});