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<?php $myarr = ['lol' => 'abc', 'beproud' => true, 'notproud' => NULL]; $c = end((array_keys($myarr))); var_dump($c); ?>
Output for git.master, git.master_jit, rfc.property-hooks
Notice: Only variables should be passed by reference in /in/Sjqer on line 4 string(8) "notproud"

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