require_once(); $this->init(); $this->set_mapping(); } public function require_once() { require_once dirname( __FILE__ ) . '/mapping.php'; require_once dirname( __FILE__ ) . '/helper.php'; require_once dirname( __FILE__ ) . '/swatches.php'; require_once dirname( __FILE__ ) . '/admin/settings.php'; require_once dirname( __FILE__ ) . '/admin/term-meta.php'; require_once dirname( __FILE__ ) . '/admin/product-data.php'; } protected function init() { Swatches::instance(); } public function set_mapping() { $this->mapping = new Mapping(); } public function get_mapping() { return $this->mapping; } } Variation_Swatches::instance();