<?php function f ($name, $vars) { var_dump($vars); return $name; } trait A { function bar() { var_dump(get_class(), get_class(null), get_class(self), get_class(${f('this', array_merge(get_defined_vars(), isset($this) ? array() : array()))})); } } class B { use A; } $f = new B; $f->bar();
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