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run code in 200+ php & hhvm versions
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<?php { $foo = "foo"; var_dump($foo); } var_dump($foo);
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
string(3) "foo" string(3) "foo"