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<?php $a = 1; $c = $a + (++$a); var_dump($c); // int(3) $a = 1; $c = ($a + $a) + $a++; var_dump($c); // int(3)
Output for 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(4) int(3)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/DCeEQ on line 9
Process exited with code 255.
Output for 4.3.0 - 5.0.5
int(3) int(3)