Question

我有一个像这样的关联数组

(
[0] => Array
    (
        [userId] => 4785
        [courseId] => 1774
        [EnterpriseId] => 13
        [lbaseid] => 1697
        [progress] => 100
        [milestone] => 5
    )

[1] => Array
    (
        [userId] => 4786
        [courseId] => 1775
        [EnterpriseId] => 13
        [lbaseid] => 1698
        [progress] => 100
        [milestone] => 5
    )

[2] => Array
    (
        [userId] => 4786
        [courseId] => 1776
        [EnterpriseId] => 13
        [lbaseid] => 1699
        [progress] => 100
        [milestone] => 5
    )

[3] => Array
    (
        [userId] => 4786
        [courseId] => 1777
        [EnterpriseId] => 13
        [lbaseid] => 1700
        [progress] => 100
        [milestone] => 5
    )

[4] => Array
    (
        [userId] => 4786
        [courseId] => 1778
        [EnterpriseId] => 13
        [lbaseid] => 1701
        [progress] => 100
        [milestone] => 5
    )

)

我想像这样转换关联数组

(
4785_1774_13[0] => Array
    (
        [userId] => 4785
        [courseId] => 1774
        [EnterpriseId] => 13
        [lbaseid] => 1697
        [progress] => 100
        [milestone] => 5
    )

4786_1775_13[1] => Array
    (
        [userId] => 4786
        [courseId] => 1775
        [EnterpriseId] => 13
        [lbaseid] => 1698
        [progress] => 100
        [milestone] => 5
    )

4786_1776_13[2] => Array
    (
        [userId] => 4786
        [courseId] => 1776
        [EnterpriseId] => 13
        [lbaseid] => 1699
        [progress] => 100
        [milestone] => 5
    )

4786_1777_13[3] => Array
    (
        [userId] => 4786
        [courseId] => 1777
        [EnterpriseId] => 13
        [lbaseid] => 1700
        [progress] => 100
        [milestone] => 5
    )

4786_1778_13[4] => Array
    (
        [userId] => 4786
        [courseId] => 1778
        [EnterpriseId] => 13
        [lbaseid] => 1701
        [progress] => 100
        [milestone] => 5
    )

)

Answer 1

如果您要使用由原始数组中的值构造的键组成一个新数组，则可以遍历初始数组并以所需的键格式构造一个新数组。

$array = [
    [
        "userId" => 11,
        "courseId" => 22,
        "EnterpriseId" => 33
    ],

    [
        "userId" => 44,
        "courseId" => 55,
        "EnterpriseId" => 66
    ]
];

var_dump($array);

$new_array = [];
foreach($array as $key => $value) {
    $new_key = implode("_",[
        $value["userId"],
        $value["courseId"],
        $value["EnterpriseId"]
    ]);
    $new_array[$new_key] = $value;
}


var_dump($new_array);

此处为实时示例：https://3v4l.org/1ibMl

将关联数组转换为不同格式

1 个答案: