PHP按照指定数组顺序给二维数组排序

按照给定的顺序对二维数组里的元素排序。

可以使用usort 对应排序

$hot = [145, 147, 146, 148, 144, 143];

$arr = [
    ['id' => 146, 'name' => '146'],
    ['id' => 143, 'name' => '143'],
    ['id' => 144, 'name' => '144'],
    ['id' => 145, 'name' => '145'],
    ['id' => 147, 'name' => '147'],
    ['id' => 148, 'name' => '148'],
];

usort($arr, function ($a, $b) use ($hot) {
    return array_search($a['id'], $hot) < array_search($b['id'], $hot) ? -1 : 1;
});


var_dump($arr);


array(6) {
  [0]=>
  array(2) {
    ["id"]=>
    int(145)
    ["name"]=>
    string(3) "145"
  }
  [1]=>
  array(2) {
    ["id"]=>
    int(147)
    ["name"]=>
    string(3) "147"
  }
  [2]=>
  array(2) {
    ["id"]=>
    int(146)
    ["name"]=>
    string(3) "146"
  }
  [3]=>
  array(2) {
    ["id"]=>
    int(148)
    ["name"]=>
    string(3) "148"
  }
  [4]=>
  array(2) {
    ["id"]=>
    int(144)
    ["name"]=>
    string(3) "144"
  }
  [5]=>
  array(2) {
    ["id"]=>
    int(143)
    ["name"]=>
    string(3) "143"
  }
}
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