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<?php final class DemoFile { public function run() { $test = 'Super'; $this->myCallback( fn() => compact('test') ); } private function myCallback($callback) { var_dump($callback()); } } $d = new DemoFile(); $d->run();
Output for git.master, git.master_jit
Warning: compact(): Undefined variable $test in /in/lEmrR on line 10 array(0) { }

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