[Resolved] for() integer type - INT or FLOAT?

[onedingo]

I might be mixing my c++ knowledge where I shouldn't, but I am wondering what is the maximum value I could use in the following pseudo code:

for ($a = 0; $a < $XXX; $a++)

I know that PHP does not support unsigned integers, so am I right in assuming that $a and $XXX are 32bit singed int's?

I have read http://www.php.net/for but it didn't have the answer I need.

R. Bowers

[onedingo]

Never mind.

I could just use is_float or is_int to find out.

How did I miss that? 😕

[Weedpacket]

Yup, 32-bit signed ints, assuming you've got a 32-bit processor. The largest such is of course 2^{31-1=2147483647,} but notice:

echo "gettype(2147483647) = ",gettype(2147483647),"\n";
echo "2147483647+1 = ",2147483647+1,"\n";
echo "gettype(2147483647+1) = ",gettype(2147483647+1),"\n";

for($a = 2147483637; $a<2147483637+20; ++$a)
{
	echo $a," ",gettype($a),"\n";
}

[onedingo]

Wow. That's a bonus...

Or a Bad Thing™ depending on your code.