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run code in 150+ php & hhvm versions
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<?php function __autoload($class) { echo $class; } method_exists('../../../../../../../etc/passwd', 'a');
based on BAvj9
Output for 4.3.0 - 5.0.5, 5.4.24 - 7.1.0
Output for 5.1.0 - 5.4.23
../../../../../../../etc/passwd