Ahhh ok. I think I finally get it. So it's like this: with pre-increment/decrement $i is immediately incremented/decremented and the value returned. Whereas with post-increment/decrement $i is evaluated first and then incremented/decremented accoringly, correct? So... 
$i = 0;
$j = ++$i;

$i and $j are both 1

$i = 0;
$j = $i++;

$i is now 1 and $j is 0

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P.S. Thanks for the speedy replies ^_^

In reply to Re: pre v.s. post (increment/decrement) by segmentation fault
in thread pre v.s. post (increment/decrement) by segmentation fault

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