Re: Problem with HUGE floating values and fmod

On Fri, Feb 17, 2006 at 06:48:13PM -0000, Marco Almeida wrote: > Hi there, > > I'm trying to calculate check digits for a payment system, using the ISO > 7064 (MOD 97-10) algorithm, wich is, already translated to PHP: > > $check=98-fmod(($num*100),97); > > Where $num is a huge number... > > Example: 90150123123400043211 should have check digit 51 > In windows calculator: 98 - ( (90150123123400043211 * 100) mod 97) works OK > and I get 51 as result > > In PHP I get 13... You will need to use GMP or BCMath to do math operations numbers that size. See: http://php.net/language.types.integer.php Curt. -- cat .signature: No such file or directory