Posted by Jason Barnett on 10/20/70 11:14

René Fournier wrote:
> I've looked in the docs and don't see anything for this per se...
> I need to convert a binary number of arbitrary length to a signed integer.
> This is how I'm doing it now:
>
>
> CODE
> --------
> function bin2int ($bin) {
> if (substr($bin,0,1) == 1) {
> $val = 0 - bindec(substr($bin,1)); // NEGATIVE
> } else {
> $val = bindec(substr($bin,1)); // POSITIVE
> }
> }
>
> echo bin2int("00001101").'<br />';
> echo bin2int("10001101");
>

http://php.net/manual/en/function.bindec.php

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