Online PHP editor | refs for CZW0W

<?php var_dump( (string) true, filter_var(true, FILTER_VALIDATE_INT), (string) false, filter_var(false, FILTER_VALIDATE_INT), (string) 1.1, filter_var(1.1, FILTER_VALIDATE_INT), (string) 0.0, filter_var(0.0, FILTER_VALIDATE_INT), (string) '0.0', filter_var('0.0', FILTER_VALIDATE_INT), (string) '-0.0', filter_var('-0.0', FILTER_VALIDATE_INT) );