basics!?!

[tony09uk]

I am currently going over my basics and trying to make it second nature (without much luck :s)

I cant work out an issue with the for loop

for($r = 1; $r <=20; $r++){
echo $r . "<br/>";
}

works fine but:

for($r = 1; $r <=20; $r*2){
echo $r . "<br/>";
}

does not. Why? I assumed as I was using a mathematical operator it would work just fine.

[edbr]

if i recall correctly it needs to be

for($r = 1; $r <=20; $r*=2){
echo $r . "<br/>";
}

[tony09uk]

thanks. Soted it perfectly