$num = $num * 10 doesnt mean $num = 10. What's happening is you've set $num to 10, defined a function, ran a function that didn't actually affect $num, and then you've printed out $num again. Nothing's actually changed.
Is this Javascript? I don't know it too well, but I don't know how function declarations work. You need to say that $num is a parameter inside the function, and then return it back again. If you say instead something like
$num = 10 function multiply(var num) { $num = $num * 10; return $num; } $num = multiply($num) and then print out num, you should get 100.
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Is this Javascript? I don't know it too well, but I don't know how function declarations work. You need to say that $num is a parameter inside the function, and then return it back again. If you say instead something like
$num = 10
function multiply(var num)
{
$num = $num * 10;
return $num;
}
$num = multiply($num)
and then print out num, you should get 100.