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run code in 150+ php & hhvm versions
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<?phpclass SW {}stream_wrapper_unregister("file");stream_wrapper_register("file", "SW");require __FILE__;echo "Boo";
Output for 5.3.0 - 5.4.32
<?phpclass SW {}stream_wrapper_unregister("file");stream_wrapper_register("file", "SW");require __FILE__;echo "Boo";