What is the output of this code if a=5

Question

a=++a + a++ + ++a + a++ + ++a

Answer 1

<?php
$a=5;
echo (++$a + $a++ + ++$a + $a++ + ++$a);
?>
Output = 36

Answer 2

a = 6+6+7+7+8; so ans is 34
but after this statement value of a will be
36
am I correct?