Re: bytea to int conversion?

Francisco Reyes wrote:
> Is there a way to convert bytea to int?
> I just got the libcrypto library installed in order to get CRC32 support.
> After getting some help I got it working, but now I am trying to figure
> out how to compare the value returned by the function, bytea, with PHP's
> CRC32 (a number).
>
> I did not see any function to do such conversion.
> I also wonder what are some letters that appear to the left or right of
> the backlashed numbers.
>
>From reading the documentation it seems bytea are numbers on base 8.
> For example I tried  select digest('a','crc32');
>     digest
> ---------------
>  k\233\223\031
> (1 row)
>
> I converted the 233, 223 and 031 to hex
> 9b 93 19
>
> and then to decimal
> 10195737
>
> But this differs from the result from PHP's CRC32 computation for the
> same, 'ab', string -1635563411
>

See stripcslashes() and pack() in the PHP documentation.

HTH,

Joe