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<?php $arrTest = array(); $anonFunc = function () use (&$arrTest) { $arrTest['test'] = 'hello'; if (!isset($arrTest['test2'])) { return $arrTest['test2'] = 2; } }; var_dump($arrTest); var_dump($anonFunc());
Output for git.master, git.master_jit, rfc.property-hooks
array(0) { } int(2)

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