--TEST-- Test dechex() - basic function dechex() --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++) { $res = dechex($values[$i]); var_dump($res); } ?> --EXPECTF-- string(1) "a" string(3) "f6e" string(3) "f6e" string(1) "3" string(2) "5f" string(1) "a" string(3) "f6e" string(1) "3" string(2) "27" string(1) "0" string(1) "1" string(1) "0" string(1) "0"