This took me all day to figure out yesterday!

I just thought I'd post this in case its of any use to anyone and so as I can let out some of my frustration!

Have a look at this code: -

 <?
if (9.79*100==979) {
&nbsp &nbsp &nbsp &nbsp echo "PHP can multiply by 100!!";
} else {
&nbsp &nbsp &nbsp &nbsp echo "PHP CAN'T multiply by 100!!";
};
?>

Can you guess which answer it gives?!? ARGH!

Of course this showed up in an import routine that takes 6mins to run. It took ages to figure out what was going on.

To be honest when I first read your post, I seriously doubted you... sorry

Once I'd tried it out, it prompted me to do some further research into a "cure" and, for the record, this is what I came up with:

if (bccomp((9.79 * 100), 979) == 0) {
echo "PHP can multiply by 100!!";
} else {
echo "PHP CAN'T multiply by 100!!";
};

If tracked this down since in the PHP Manual it says: "...So never trust floating number results to the last digit and never compare floating point numbers for equality. If you really need higher precision, you should use the arbitrary precision math functions or gmp functions instead."

Thanks for the information though - It's probably saved me from making a really dumb error at some point in the future!

Stick around NotionLogic,

You sound real handy. <img src=http://www.gamers-forums.com/smilies/contrib/ruinkai/biggthumpup.gif ALT=":thumb">