Swapping Strings

[5ub51ded]

Is there an easier way of swapping strings? I'm trying to swap strings each time in the for loop like

$string = $string1
$string1 = $string2
$string2 = $string

[Installer]

Like this?

$tmp = $string;
$string = $string1;
$string1 = $string2;
$string2 = $tmp;