将元素移到数组的末尾 [英] Shift an element to the end of array

问题描述

我有一个包含pagrank值列表的数组.考虑下面的数组:

I have an array which contains list of pagrank values. Consider below array:

Array
(
    [0] => stdClass Object
        (
            [pagerank] => 3
        )

    [1] => stdClass Object
        (
            [pagerank] => 1
        )

    [2] => stdClass Object
        (
            [pagerank] => R
        )

    [3] => stdClass Object
        (
            [pagerank] => 2
        )

    [4] => stdClass Object
        (
            [pagerank] => 7
        )

)

我想用'R'来移动/移动网页排名，例如:

I want to shift/move page rank with 'R' like:

[2] => stdClass Object
        (
            [pagerank] => R
        )

到数组末尾，它应该在数组的最后一个索引上吗?

to the end of array and it should be on last index of array?

阵列键未知.

推荐答案

如果索引未知:

foreach($array as $key => $val) {
    if($val->pagerank == 'R') {
        $item = $array[$key];
        unset($array[$key]);
        array_push($array, $item); 
        break;
    }
}

如果不想在迭代数组时修改数组，只需找到索引即可进行修改.

If you don't want to modify the array while it is being iterated over just find the index then make the modifications.

$foundIndex = false;
foreach($array as $key => $val) {
    if($val->pagerank == 'R') {
        $foundIndex = $key;
        break;
    }
}
if($foundIndex !== false) {
    $item = $array[$foundIndex];
    unset($array[$foundIndex]);
    array_push($array, $item);
}

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