WordPress at a glance
filter is not described

woocommerce_quantity_input_placeholder filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_quantity_input_placeholder', 'filter_function_name_5115', 10, 2 );
function filter_function_name_5115( $string, $product ){
	// filter...

	return $string;
}
$string
-
$product
-

Where the hook is called

woocommerce_quantity_input()
woocommerce_quantity_input_placeholder
woocommerce/includes/wc-template-functions.php 1724
'placeholder'  => apply_filters( 'woocommerce_quantity_input_placeholder', '', $product ),

Where in WP core the hook is used WooCommerce

Usage not found.