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<?php $a = 1; $c = $a + $a + $a++; var_dump($c); $a = 1; $c = $a + $a++; var_dump($c);
Output for 5.1.0 - 7.1.0
int(3) int(3)
Output for 4.3.0 - 5.0.5
int(3) int(2)