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run code in 150+ php & hhvm versions
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<?php $object = (object) array("123"=>"456"); foreach ($object as $key => $value) { echo $key . ' => ' . $value,"\n"; }
based on 48MZf
Output for 4.3.0 - 4.4.9, 5.2.1 - 7.1.0
123 => 456
Output for 5.2.0

Process exited with code 139.
Output for 5.0.0 - 5.1.6