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<?php $arr=[ 'a' => [ 'b' => 3, ] ]; $globalsCopy = $GLOBALS; $globalsCopy['arr']['a']['b'] = 12; var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["a"]=> array(1) { ["b"]=> int(3) } }

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