Question

我有这个数组

Array
    (
        [0] => Array
            (

                [id] => book
                [name] => Array
                    (
                        [0] => author
                        [1] => title
                        [2] => genre
                        [3] => price
                        [4] => publish_date
                        [5] => description
                    )

            )

        [1] => Array
            (
                [id] => book
                [name] => Array
                    (
                        [0] => author
                        [1] => title
                        [2] => genre
                        [3] => price
                        [4] => publish_date
                        [5] => description
                    )

            )

    )
    Array
    (
        [0] => Array
            (
                [id] => library
                [name] => Array
                    (
                        [0] => room
                        [1] => room
                    )

            )

        [1] => Array
            (
                [id] => library
                [name] => Array
                    (
                        [0] => book
                        [1] => book
                        [2] => book
                        [3] => book
                   )   
            )  
    )

我希望我的输出看起来像

Array
    (
        [0] => Array
            (
                [id] => library
                [name] => Array
                     (
                        [0] => room
                        [1] => room
                    )
                     (
                        [0] => book
                        [1] => book
                        [2] => book
                        [3] => book
                    )

            )

    )
    Array
    (
    [0] => Array
    (

                [id] => book
                [name] => Array
                    (
                        [0] => author
                        [1] => title
                        [2] => genre
                        [3] => price
                        [4] => publish_date
                        [5] => description
                    )

            )
    }

我正在努力比较所有的id和名字如果它具有相同的id，那么它将所有值[name]放在一起如果它具有相同的名称，并且相同的ID唯一非常感谢我试图这样做，但它只返回只有唯一的ID，它有警告：未定义的索引：名称

if (is_array($servico))
{
    foreach($servico as $data)
    {                              
        $result[$data['id']][] =  ($data['name']);                             
    }
}

Answer 1

在添加元素之前，您需要检查新元素是否已经在数组中，这样您才能获得唯一元素。并且为了防止关于未定义索引的警告，如果元素尚不存在，则需要初始化该元素。

foreach ($servico as $data) {
    if (!isset($result[$data['id']])) {
        $result[$data['id']] = array();
    }
    if (!in_array($data['name'], $result[$data['id']])) {
        $result[$data['id']][] = $data['name'];
    }
}

数组中的唯一数组

1 个答案: