Online PHP editor | refs for cDWQi

<?php var_dump(filter_var(false, FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var(0, FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var('false', FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var('0', FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var(true, FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var(1, FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var('true', FILTER_VALIDATE_BOOLEAN)); var_dump(filter_var('1', FILTER_VALIDATE_BOOLEAN));