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run code in 150+ php & hhvm versions
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<?php $a = array('foo' => 5, 'bar' => 10); var_dump($a{'foo'});
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
int(5)