PHP SPL Autoloader

.htaccess

# Configure PHP's autoloader and set include_path
<IfModule env_module>
	SetEnv AUTOLOAD_DIR classes
	SetEnv AUTOLOAD_EXTS .php
	SetEnv AUTOLOAD_FUNC spl_autoload
</IfModule>
# Loads the autoloader script before executing main PHP file
php_value auto_prepend_file ./autoloader.php

autoloader.php

<?php
set_include_path(
	realpath(getenv('AUTOLOAD_DIR')) .
	PATH_SEPARATOR . get_include_path()
);
spl_autoload_extensions(getenv('AUTOLOAD_EXTS'));
spl_autoload_register(getenv('AUTOLOAD_FUNC'));

PHP Autoloader using .htaccess

• .htaccess file sets environment variables and prepends autoloader script
• autoloader.php sets include_path and autoloader using getenv