$string .= $new vs $string = $string . $new performance

Hey Guys,
Quick question about the PHP compiler, is there any performance
difference between

$string .= $new;

and

$string = $string . $new;

Does the compiler see them as equivalent and optimize to the later, or
does concatenate and then copy?

Can anyone point me to some documentation on this, I havent been able to
find anything on this particular topic?

Cheers
Leigh Finch

re: $string .= $new vs $string = $string . $new performance

..oO(Leigh Finch)
Don't worry and google "premature optimization" if you want to.

Micha