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<?php $a ="zz"; $b = "zz"; $a++; $b--; var_dump($a); var_dump($b); $c = "zz"; $c = (int) $c; var_dump($c++);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(3) "aaa" string(2) "zz" int(0)