php - 从数组中删除索引

Question

可能重复：
从数组中删除索引键以访问对象？

我需要能够访问该term_id值，但我不知道与数组关联的数字或索引。我怎样才能访问它？

我想像这样访问它$value->term_id，现在我需要通过将数字放在值（$value->[26]->term_id）之后来访问它。

Array
(
    [26] => stdClass Object
        (
            [term_id] => 26
            [name] => Night Life.
            [slug] => shopping-and-night-life
            [term_group] => 0
            [term_taxonomy_id] => 28
            [taxonomy] => map_categories
            [description] => Most of the late night clubs, bars and pubs in Victoria are situated downtown. Here are a few to check out:
            [parent] => 0
            [count] => 6
            [object_id] => 925
        )

)

Answer 1

您可以使用array_values()“重置”数组索引：

$new = array_values($old);

会导致

Array
(
    [0] => stdClass Object
        (
            [term_id] => 26
            [name] => Night Life.
            [slug] => shopping-and-night-life
            [term_group] => 0
            [term_taxonomy_id] => 28
            [taxonomy] => map_categories
            [description] => Most of the late night clubs, bars and pubs in Victoria are situated downtown. Here are a few to check out:
            [parent] => 0
            [count] => 6
            [object_id] => 925
        )

)

不管之前的数组索引是什么。

Answer 2

现在它是一个数组，因此您可以像这样访问它：$value[26]->term_id如果您不想放置密钥，您只需要设置另一个变量等于数组中的对象：

$value2 = $value[26];
echo $value2->term_id;

如果您不知道该值是否存在，请26使用 foreach。

foreach($value as $key => $val) {
     $term_id = $val->term_id;
}

如果你知道数组中只有一个元素，你可以这样做：

$value2 = end($value);
$term_id = $value2->term_id;

Answer 3

您必须要么搜索它，要么编写一个算法，使您一开始就不会丢失它。