Stumped.

[funeralcrasher]

$num = 10;
function multiply()
{
$num = $num * 10;
}
multiply();
echo $num;

This prints "10" to the screen.

$num = $num * 10;
echo $num;

But this prints "0".

Why is that?

Comments

[outintospace.livejournal.com]

Because $num is not returned by the function. When multiply() is called, it's not updating the reference to $num. It's creating a new variable with method scope called $num.