Division by zero

[cdherold]

I have the following:

$percent = $read[4]/$read[5];

I want to make sure that $percent goes to zero("0") if either $read[4] or $read[5] are zero.

How do I say ...

if both $read[4] and $read[5] are NOT zero, then perfom

$percent = $read[4]/$read[5];

else $percent = 0;

thanks,

cdherold

[craigh]

if ($read[4] != 0) and ($read[5] != 0) {
$percent=$read[4]/$read[5];
} else {
$percent = 0;
}