|
|
Posted by Kimmo Laine on 11/21/91 11:24
"Siebie" <ceesboofUNSPAM@hotmail.com> kirjoitti
viestissδ:Xns96B8AF5583478Siebie@194.109.133.133...
> Hey,
> Anybody knows a possible way to do binary calculations (OR, AND, XOR).
> Anything I type before 'AND' will be outputted, but the AND-word and
> anything behind it is ignored. E.g.
>>>print 3 AND 1;
> results in 3.
>
> My PHP-version is 4.2.3.
Binary calculations are done with the binary (or bitwise) operators & | ^
and ~, >> and <<.
Examples:
echo (1 & 2); // Prints 0, since 0001 AND 0010 equals 0000
echo (1 | 2); // Prints 3, since 0001 OR 0010 equals 0011
echo ~(6 ^ 9) // prints 16, since NOT(0110 XOR 1001) equals !0000 equals
1111...
Etc... I just pulled the binary numbers from my hat, and my boolean math is
rusty, so errors may occur, but you get the point... And I assume this was
what you were looking for. See the manual on bitwise operators for more.
--
SETI @ Home - Donate your cpu's idle time to science.
Further reading at <http://setiweb.ssl.berkeley.edu/>
Kimmo Laine <eternal.erectionN0@5P4Mgmail.com>
[Back to original message]
|