woocommerce_cart_product_subtotal │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_cart_product_subtotal', 'wp_kama_woocommerce_cart_product_subtotal_filter', 10, 4 );

/**
 * Function for `woocommerce_cart_product_subtotal` filter-hook.
 * 
 * @param  $product_subtotal 
 * @param  $product          
 * @param  $quantity         
 * @param  $that             
 *
 * @return 
 */
function wp_kama_woocommerce_cart_product_subtotal_filter( $product_subtotal, $product, $quantity, $that ){

	// filter...
	return $product_subtotal;
}

$product_subtotal

-

$product

-

$quantity

-

$that

-

Where the hook is called

return apply_filters( 'woocommerce_cart_product_subtotal', $product_subtotal, $product, $quantity, $this );

Where the hook is used in WooCommerce