woocommerce_show_admin_notice filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_show_admin_notice', 'filter_function_name_4022', 10, 2 );
function filter_function_name_4022( $true, $notice ){
	// filter...

	return $true;
}

$true

-

$notice

-

Where the hook is called

if ( ! empty( self::$core_notices[ $notice ] ) && apply_filters( 'woocommerce_show_admin_notice', true, $notice ) ) {

Where in WP core the hook is used WooCommerce

add_filter( 'woocommerce_show_admin_notice', array( $this, 'remove_install_notice' ), 10, 2 );