--TEST-- Test decbin() - basic function test --FILE-- <?php $values = array(10, 3950.5, 3.9505e3, 039, 0x5F, "10", "3950.5", "3.9505e3", "039", "0x5F", true, false, null, ); for ($i = 0; $i < count($values); $i++) { $res = decbin($values[$i]); var_dump($res); } ?> --EXPECTF-- string(4) "1010" string(12) "111101101110" string(12) "111101101110" string(2) "11" string(7) "1011111" string(4) "1010" string(12) "111101101110" string(2) "11" string(6) "100111" string(1) "0" string(1) "1" string(1) "0" string(1) "0"