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   name = 'silk';    try {        return $arr;    } finally {        $arr->name = "xiaoyang";    }}function test2(){    $arr = [        'name' => 'silk',        'age' => 18    ];    try {        return $arr;    } finally {        $arr['name'] = "xiaoyang";    }}function test3(){    $i = 0;    try {        return ++$i;    } finally {        $i = $i + 2;    }}function test4(){    $i = 0;    try {//        return ++$i;        throw new Exception("new Exception");    } catch (Exception $e) {        return --$i;    } finally {        return --$i;    }}var_dump(test());var_dump(test1());var_dump(test2());var_dump(test3());var_dump(test4());

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