相关疑难解决方法(0)

我有以下数组,我想重新索引,所以键是相反的(理想情况下从1开始):

当前数组(编辑:数组实际上看起来像这样):

Array (

[2] => Object
    (
        [title] => Section
        [linked] => 1
    )

[1] => Object
    (
        [title] => Sub-Section
        [linked] => 1
    )

[0] => Object
    (
        [title] => Sub-Sub-Section
        [linked] => 
    )

)

怎么样:

Array (

[1] => Object
    (
        [title] => Section
        [linked] => 1
    )

[2] => Object
    (
        [title] => Sub-Section
        [linked] => 1
    )

[3] => Object
    (
        [title] => Sub-Sub-Section
        [linked] => 
    )

)

我的数组看起来像这样:

array(
  0 => 'val',
  2 => 'val',
  3 => 'val',
  5 => 'val',
  7 => 'val'
);

如何重新排序按键以便它会像0, 1, 2, 3, 4？