woocommerce_quantity_input_pattern │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_quantity_input_pattern', 'wp_kama_woocommerce_quantity_input_pattern_filter' );

/**
 * Function for `woocommerce_quantity_input_pattern` filter-hook.
 * 
 * @param  $[0-9]* 
 *
 * @return 
 */
function wp_kama_woocommerce_quantity_input_pattern_filter( $[0-9]* ){

	// filter...
	return $[0-9]*;
}

$[0-9]*

-

Where the hook is called

'pattern'      => apply_filters( 'woocommerce_quantity_input_pattern', has_filter( 'woocommerce_stock_amount', 'intval' ) ? '[0-9]*' : '' ),

Where the hook is used in WooCommerce