note 11484 modified in is_float by jmcastagnetto

[Editor's note: Just a comment, testing using integer modulus would be simpler: $data3 = ($data1 % 2 == 0) ? "even" : "odd" ; You could even do: $data3 = (++$data1 % 2 == 0) ? "even" : "odd" ; which should do be odd, even, odd, even, ... if $data1 has not been initialized (assumed initial value of zero) ] More along the lines of the alternating color scheme for tables... You can also work out something like this... some_loop { $data1 += $data1; $data2 = $data1 / 2; $data3 = is_float($data2) == 1 ? "#000000" : "#222222"; } http://www.php.net/manual/is-float.php