Re: strtotime() lost precision?

Mario de Frutos Dieguez wrote:

Hi! I'm back hahaha :D I'm making functions to calculate the duration (only laboral days) between 2 dates and the initial and final date between a duration give me in laboral days. I use the following function to make the diference between 2 dates: function fecDiferenciaFechas($fecFechaInicio,$fecFechaFin)

       {
           $fecFechaInicio=strtotime($fecFechaInicio);
           $fecFechaFin=strtotime($fecFechaFin);
                     if ($fecFechaFin == -1 || $fecFechaInicio == -1)
           {
               return false;
           }
                     $iDiferencia = $fecFechaFin - $fecFechaInicio;
                     //Inicializamos la variable
           $iDias = 0;
                     //Devolvemos la diferencia en dias
           return ($iDiferencia/86400);
       }

The problem is that with a duration of 220 the return is 219.958333, where im losing precision?

computers can't stores floats precisely, precision errors are. Rasmus gave a good explaination of this on this list not so long ago - that said there is lots of info on this on the web, here is one good article to get you started: http://docs.sun.com/source/806-3568/ncg_goldberg.html on a more practical note take a look at the following php functions: round(), ceil(), floor() one of those should provide you with a 'fix' to the precision error(s) you are seeing.

(Sorry for my home english :P)

Don't worry about it! my spanish begins and ends at 'Hasta la vista' ;-) actually that's not strictly true - I managed to have a whole conversation in Spanish once only using the word 'bale' (I think there is supposed to be an accent on the 'e' of 'bale') (btw. I couldn't quite figure out what 'home english' is)