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run code in 150+ php & hhvm versions
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<?php $v = 1.1; var_dump( ~1, ~1.1, ~'Test', ~"1e1", ++$v );
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(-2) int(-2) string(4) "����" string(3) "�" float(2.1)