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run code in 200+ php & hhvm versions
Bugs & Features
<?php $class = "class"; var_dump(new ${"_" . !$_=("std" . $class)});
based on a2fLY
Output for 5.0.0 - 7.2.0
object(stdClass)#1 (0) { }
Output for 4.3.0 - 4.4.9
object(stdClass)(0) { }