woocommerce_emogrifier │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_emogrifier', 'wp_kama_woocommerce_emogrifier_action', 10, 2 );

/**
 * Function for `woocommerce_emogrifier` action-hook.
 * 
 * @param  $css_inliner 
 * @param  $that        
 *
 * @return void
 */
function wp_kama_woocommerce_emogrifier_action( $css_inliner, $that ){

	// action...
}

$css_inliner

-

$that

-

Where the hook is called

do_action( 'woocommerce_emogrifier', $css_inliner, $this );

Where the hook is used in WooCommerce