Changing the text in the dropdown

Here’s an example of how you can change the text in the dropdown. There’s a option to change it for a numeric value and for the ‘All’ option when using the ‘-1’ as a value.

add_filter( 'wppp_ppp_text', 'wppp_custom_text', 10, 2 );
function wppp_custom_text( $text, $value ) {
	if ( $value == '-1' ) {
		return 'Show all products';
	}
	return 'Display %s products';

}