javascript - 如何从 PHP 中创建对象内的 JavaScript 数组

Question

我需要构建一个 array-within-objects-within-array-within-objects 供 JavaScript 使用。我的数据在 PHP 中，我可以使用数组中的 foreach 循环来组织必要的信息:

$officeWiseEmployees = array();
foreach($employeeList as $employee) :
    $officeWiseEmployees[$employee->office_name][$employee->employee_id] = $employee->employee_name;
endforeach;

我的目的是创建数组，然后在必要时使用 (object) 进行类型转换以创建其中的对象。顺便说一句，结果数据是:

array:2 [
  "Office 1" => array:2 [
    1 => "User 1"
    2 => "User 2"
  ]
  "Office 2" => array:2 [
    3 => "User 3"
    4 => "User 4"
  ]
]

所需的对象内数组...:

[{
    text: 'Office Name 1',
    children:
            [ { value: 1, text: 'Employee 1' }, { value: 2, text: 'Employee 2' } ]
},
{
    text: 'Office Name 2',
    children:
            [ { value: 3, text: 'Employee 3' }, { value: 4, text: 'Employee 4' } ]
}]

问题是，每当我想继续分配数组索引时，我都会在 foreach 循环中失败。

$make_up_array = array();
foreach( $officeWiseEmployees as $office_name => $office_employees ) {
    $make_up_array['text'] = $office_name;
    foreach( $office_employees as $employee_id => $employee_name ) {
        // dump($employee_id);
        // dump($employee_name);

    }
}

您可以看到，在第 3 行，我做错了，因此我只获取了 text 索引下的最后一个 Office 名称。如果我在 text 或 children 上引入另一个索引，那么我将进一步超出我需要的设置。

如何以简单的方式将 PHP 数组转换为 JavaScript array-within-objects-within-array-within-objects？我认为这比我想象的要容易，这就是为什么 developer used this .

Answer 1

正如其他人提到的，json_encode 将确定某物是数组还是对象。

很多复杂性来自于将用户 ID 设置为每个元素的键的方式。

<?php

$employees = [
    ['id' => 1, 'name' => 'Employee 1', 'office' => 'Office 1'],
    ['id' => 2, 'name' => 'Employee 2', 'office' => 'Office 1'],
    ['id' => 3, 'name' => 'Employee 3', 'office' => 'Office 2'],
    ['id' => 4, 'name' => 'Employee 4', 'office' => 'Office 1'],
    ['id' => 5, 'name' => 'Employee 5', 'office' => 'Office 2'],
];

$offices = [];
foreach ($employees as $employee) {
    $offices[$employee['office']][] = [$employee['id'] => $employee['name']];
}

$officesOutput = [];
foreach ($offices as $name => $officeEmployees) {
    $employees = [];
    foreach ($officeEmployees as $employeeName) {
        $employees[] = [
            'value' => key($employeeName),
            'text' => current($employeeName)
        ];
    }

    $officesOutput[] = [
        'text' => $name,
        'children' => $employees
    ];
}


echo json_encode($offices, JSON_PRETTY_PRINT);
echo PHP_EOL;
echo json_encode($officesOutput, JSON_PRETTY_PRINT);

结果:

{
    "Office 1": [
        {
            "1": "Employee 1"
        },
        {
            "2": "Employee 2"
        },
        {
            "4": "Employee 4"
        }
    ],
    "Office 2": [
        {
            "3": "Employee 3"
        },
        {
            "5": "Employee 5"
        }
    ]
}
[
    {
        "text": "Office 1",
        "children": [
            {
                "value": 1,
                "text": "Employee 1"
            },
            {
                "value": 2,
                "text": "Employee 2"
            },
            {
                "value": 4,
                "text": "Employee 4"
            }
        ]
    },
    {
        "text": "Office 2",
        "children": [
            {
                "value": 3,
                "text": "Employee 3"
            },
            {
                "value": 5,
                "text": "Employee 5"
            }
        ]
    }
]