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<?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( ${f('this', isset($this) && false ?: get_defined_vars())} )); } } class B { use A; } $f = new B; $f->bar();
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: get_class(): Argument #1 ($object) must be of type object, null given in /in/1EQof:6 Stack trace: #0 /in/1EQof(8): B->bar() #1 {main} thrown in /in/1EQof on line 6
Process exited with code 255.

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