woocommerce_product_default_attributes │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_product_default_attributes', 'wp_kama_woocommerce_product_default_attributes_filter', 10, 2 );

/**
 * Function for `woocommerce_product_default_attributes` filter-hook.
 * 
 * @param  $default_attributes 
 * @param  $that               
 *
 * @return 
 */
function wp_kama_woocommerce_product_default_attributes_filter( $default_attributes, $that ){

	// filter...
	return $default_attributes;
}

$default_attributes

-

$that

-

Where the hook is called

return apply_filters( 'woocommerce_product_default_attributes', $this->get_default_attributes(), $this );

Where the hook is used in WooCommerce