for loop and dynamic variables? PHP bug?

[zdr]

ok i've run into a little roadblock here .. I'm trying to pull out a variable and make a new variable out of it ($f4 for example). the following lines will work in my code:

$var="f".$num[0]; $$var = 1; 
$var="f".$num[1]; $$var = 1; 
$var="f".$num[2]; $$var = 1; 
$var="f".$num[3]; $$var = 1;

but since i expect [i] to change depending on how many checkboxes the user clicks, I want to put it in a for loop but it just won't work! is there a bug in PHP?

for ($i=0; $i < 10; $i++) 
	{ 
		$var="f".$num[i]; 
		$$var = 1;  
	}

[pootergeist]

$num[$i] not $num[i]

if that was just a typo - try evaling

for()
{
eval("\$f" .$i. " = 1");
}