i++ related issues

I++ 's Problem
int I = 3;
i = i + i++ + ++i;
The above code in the Java/c#/javascript output 11, but in PHP but output 12,php calculation and for his three kinds of what is the difference? Think of the solution, seeking guidance!

------Solution--------------------

$i = 3;
$a = $i + $i + + + + + $i;
echo $a; 12

This is a BUG in PHP
It seems that all php5 have this problem (at least the 3 versions I have at hand are like this)
The problem is in the first $i the method of passing the value, such as writing

$i = 3;
$a = ($d = $i) + $i + + + + $i;
echo $a; 11

It's right.
Obviously the first $i pass the reference, because the $i + + in the back is actually involved in the operation of 4 instead of 3.

It's clearer to remove the + + + $i

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