Online PHP editor | refs for RZIDI

<?php $num = 3; $parity = $b = 0; $parity = $num & 1; $b += $parity; $b += $num & 2 ? 1 : 0; $b += $num & 4 ? 1 : 0; $b += $num & 8 ? 1 : 0; $b += $num & 16 ? 1 : 0; $b += $num & 32 ? 1 : 0; $b += $num & 64 ? 1 : 0; printf("Num: %d\nBits on: %d\nParity: %d", $num, $b, $parity);