PHP equivalent javascript >>> shift right with zero fill bitwise operators?

Question

May I know how can I do PHP >>> ? Such operators is not available in PHP, but is available in Javascript.

I just managed to discover a function as follow:

Answer 1

Your function doesn't work because when $b == 0, the expression

$a >> -1

will be evaluated, which returns 0.

Assuming 32-bit machines, you can add a special case:

if ($z & $a) {
  if ($b == 0)
    return $a + 0x100000000;
  else {
    ...