WordPress at a glance
filter is not described

loop_shop_per_page filter-hook . WC 1.0

Work out how many products to query.

Usage

add_filter( 'loop_shop_per_page', 'filter_function_name_352' );
function filter_function_name_352( $wc_get_default_products_per_row() * wc_get_default_product_rows_per_page ){
	// filter...

	return $wc_get_default_products_per_row() * wc_get_default_product_rows_per_page;
}
$wc_get_default_products_per_row() * wc_get_default_product_rows_per_page
-

Where the hook is called

WC_Query::product_query()
loop_shop_per_page
woocommerce/includes/class-wc-query.php 484
$q->set( 'posts_per_page', $q->get( 'posts_per_page' ) ? $q->get( 'posts_per_page' ) : apply_filters( 'loop_shop_per_page', wc_get_default_products_per_row() * wc_get_default_product_rows_per_page() ) );

Where in WP core the hook is used WooCommerce

Usage not found.