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<?php ini_set('display_errors', 1); ini_set('display_startup_errors', 1); error_reporting(-1); $x = 12; $y = &$x; $ar = ['a' => 1, 'b' => 2]; $z = &$ar['b']; var_dump($ar);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { ["a"]=> int(1) ["b"]=> &int(2) }

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