Description:
------------
Hello,
I've incountered a following mistake in your is_infinite function - why does it return 'false' in the following example?


Here is_infinite returns 'false' and is_finite - convercely, 'true'.

Reproduce code:
---------------
<?PHP
$T1=1;
$T2=0;
if  (is_infinite($T1/$T2))
{
$R="value is infinite"; // 1)
}
else
{
$R="value is finite"; // 2)
}
echo $R;
?>

So this script outputs 2) instead of 1), but it's incorrect

Expected result:
----------------
From the maths. analisys follows, that 
constant / zero = infinity

So the answer must be "value is infinite" not ="value is finite"!