On Sat, 2004-02-07 at 23:50, Michal Migurski wrote:
> Another possibility is to pipe the expression to bc, which could do the
> input check for you, and probably covers a lot of syntactic ground.
> Slightly less resource-efficient, but you don't have to reinvent the
> wheel (untested, unix only):
> $result = shell_exec("echo '${expr}' | bc");
Both eval and piping to bc via the shell work but open up big security
holes if you are not careful. If you have bcmath or gmp enabled in php
I recommend looking at these functions:
http://www.php.net/manual/en/function.gmp-mul.php
http://www.php.net/manual/en/function.bcmul.php
--
Adam Bregenzer
[EMAIL PROTECTED]
http://adam.bregenzer.net/
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