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run code in 200+ php & hhvm versions
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<?php $py = array("py" => "yo","hello"=>"fuck"); $yo = exec("/bin/sh echo yo"); echo $yo; var_dump($py); ?>
Output for 4.3.0 - 7.2.0
array(2) { ["py"]=> string(2) "yo" ["hello"]=> string(4) "fuck" }