学习整理在php中一个二维数组按另一个一维数组顺序排序

一维数组数据

$a = [
    100,
    102,
    104
];

需要按照$a排序的二维数组

$b = [
    104 => [
        'id' => '104',
        'qipa250' => '104qipa250'
    ],
    105 => [
        'id' => '105',
        'qipa250' => '105qipa250'
    ],
    102 => [
        'id' => '102',
        'qipa250' => '102qipa250'
    ],
    100 => [
        'id' => '100',
        'qipa250' => '100qipa250'
    ],
    101 => [
        'id' => '101',
        'qipa250' => '101qipa250'
    ]
];

实现方式：

// 使用键名比较计算数组的交集
$intersect_key = array_intersect_key(array_flip($a), $b);
// 使用后面数组的值替换第一个数组的值
$data = array_replace($intersect_key, $b);

最终返回结果：

array:5 [
  100 => array:2 [
    "id" => "100"
    "qipa250" => "100qipa250"
  ]
  102 => array:2 [
    "id" => "102"
    "qipa250" => "102qipa250"
  ]
  104 => array:2 [
    "id" => "104"
    "qipa250" => "104qipa250"
  ]
  105 => array:2 [
    "id" => "105"
    "qipa250" => "105qipa250"
  ]
  101 => array:2 [
    "id" => "101"
    "qipa250" => "101qipa250"
  ]
]