$value & 1 will always produce 0 or 1 as the result, depending on whether the lowest bit of $value was set. $value & 2 will always produce 0 or 2 as the result, depending on whether the second lowest bit of $value was set. And so on.

So, you can say: 

if ($value & 128) {
   print "1";
} else {
   print "0";
}

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In reply to Re^2: Bitwise operators by ysth
in thread Bitwise operators by thevoid

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