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<?php function test(&$arr = array()) { $GLOBALS['g_arr'] =& $arr; $arr[] = 1; var_dump($arr); } test(); var_dump($g_arr);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { [0]=> int(1) } array(1) { [0]=> int(1) }

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