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run code in 150+ php & hhvm versions
Bugs & Features
<?hh class AnnotatedClass { public int $x; private string $s; protected array $arr; public AnotherClass $ac; function bar(string $str, bool $b): float { if ($b && $str === "Hi") { return 3.2; } return 0.3; } }
Output for hhvm-3.12.0
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.34 - 5.6.11
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/Gvud8 on line 2
Process exited with code 255.
Output for 5.4.0 - 5.4.32
<?hh class AnnotatedClass { public int $x; private string $s; protected array $arr; public AnotherClass $ac; function bar(string $str, bool $b): float { if ($b && $str === "Hi") { return 3.2; } return 0.3; } }