我有一组StdClass对象，它包含几种不同的汽车类型（例如紧凑型轿车，小型货车等），按价格排序。我想按以下顺序对数组进行排序：
我不确定使用键＆＃34;描述＆＃34;对此订单进行排序是否有意义。或＆＃34;代码＆＃34;。我已经弄明白了如何按价格排序，但不知道如何按照上面列出的顺序对数组进行重新排序。任何帮助，将不胜感激。谢谢！
输入数组：
array (
0 =>
stdClass::__set_state(array(
'description' => 'Mid-Size SUV',
'codes' =>
array (
0 => 'IFAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '1',
'price' => '30.31',
)),
1 =>
stdClass::__set_state(array(
'description' => 'Standard-Size SUV',
'codes' =>
array (
0 => 'SFAR',
1 => 'RFAR',
),
'max_people' => '7',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '1',
'price' => '35.53',
)),
2 =>
stdClass::__set_state(array(
'description' => 'Specialty Vehicle',
'codes' =>
array (
0 => 'XXAR',
),
'max_people' => false,
'min_people' => false,
'max_bags' => '',
'min_bags' => '',
'price' => '36.72',
)),
3 =>
stdClass::__set_state(array(
'description' => 'Compact Car',
'codes' =>
array (
0 => 'CCAR',
1 => 'CDAR',
),
'max_people' => '5',
'min_people' => '4',
'max_bags' => '3',
'min_bags' => '1',
'price' => '37.21',
)),
4 =>
stdClass::__set_state(array(
'description' => 'Economy Car',
'codes' =>
array (
0 => 'ECAR',
1 => 'EDAR',
),
'max_people' => '5',
'min_people' => '4',
'max_bags' => '2',
'min_bags' => '1',
'price' => '37.21',
)),
5 =>
stdClass::__set_state(array(
'description' => 'Mid-Size Car',
'codes' =>
array (
0 => 'ICAR',
1 => 'IDAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '1',
'price' => '39.46',
)),
6 =>
stdClass::__set_state(array(
'description' => 'Standard-Size Car',
'codes' =>
array (
0 => 'SCAR',
1 => 'SDAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '1',
'price' => '41.77',
)),
7 =>
stdClass::__set_state(array(
'description' => 'Minivan',
'codes' =>
array (
0 => 'MVAR',
),
'max_people' => '7',
'min_people' => '7',
'max_bags' => '5',
'min_bags' => '2',
'price' => '43.18',
)),
8 =>
stdClass::__set_state(array(
'description' => 'Full-Size Car',
'codes' =>
array (
0 => 'FCAR',
1 => 'FDAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '1',
'price' => '43.50',
)),
9 =>
stdClass::__set_state(array(
'description' => 'Compact SUV',
'codes' =>
array (
0 => 'CFAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '3',
'min_bags' => '3',
'price' => '46.42',
)),
10 =>
stdClass::__set_state(array(
'description' => 'Full-Size Hybrid',
'codes' =>
array (
0 => 'FCAH',
),
'max_people' => false,
'min_people' => false,
'max_bags' => '',
'min_bags' => '',
'price' => '48.00',
)),
11 =>
stdClass::__set_state(array(
'description' => 'Standard-Size Convertible',
'codes' =>
array (
0 => 'STAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '4',
'min_bags' => '1',
'price' => '48.39',
)),
12 =>
stdClass::__set_state(array(
'description' => 'Sports Car',
'codes' =>
array (
0 => 'XSAR',
1 => 'SSAR',
),
'max_people' => '5',
'min_people' => '4',
'max_bags' => '3',
'min_bags' => '1',
'price' => '48.72',
)),
13 =>
stdClass::__set_state(array(
'description' => 'Premium Car',
'codes' =>
array (
0 => 'PCAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '4',
'min_bags' => '2',
'price' => '48.72',
)),
14 =>
stdClass::__set_state(array(
'description' => 'Luxury Car',
'codes' =>
array (
0 => 'LCAR',
1 => 'LDAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '5',
'min_bags' => '1',
'price' => '52.16',
)),
15 =>
stdClass::__set_state(array(
'description' => 'Full-Size SUV',
'codes' =>
array (
0 => 'FFAR',
),
'max_people' => '8',
'min_people' => '7',
'max_bags' => '4',
'min_bags' => '2',
'price' => '52.92',
)),
16 =>
stdClass::__set_state(array(
'description' => 'Full-Size Van',
'codes' =>
array (
0 => 'FVAR',
),
'max_people' => '15',
'min_people' => '12',
'max_bags' => '5',
'min_bags' => '1',
'price' => '90.38',
)),
17 =>
stdClass::__set_state(array(
'description' => 'Compact Convertible',
'codes' =>
array (
0 => 'CTAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '1',
'min_bags' => '1',
'price' => '91.17',
)),
18 =>
stdClass::__set_state(array(
'description' => 'Premium SUV',
'codes' =>
array (
0 => 'PFAR',
1 => 'UFAR',
),
'max_people' => '7',
'min_people' => '5',
'max_bags' => '5',
'min_bags' => '1',
'price' => '92.64',
)),
19 =>
stdClass::__set_state(array(
'description' => 'Specialty Car',
'codes' =>
array (
0 => 'XCAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '3',
'min_bags' => '3',
'price' => '94.42',
)),
20 =>
stdClass::__set_state(array(
'description' => 'Mid-Size Convertible',
'codes' =>
array (
0 => 'ITAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '2',
'min_bags' => '2',
'price' => '97.98',
)),
21 =>
stdClass::__set_state(array(
'description' => 'Luxury SUV',
'codes' =>
array (
0 => 'LFAR',
),
'max_people' => '5',
'min_people' => '5',
'max_bags' => '3',
'min_bags' => '3',
'price' => '113.66',
)),
22 =>
stdClass::__set_state(array(
'description' => 'Premium Convertible',
'codes' =>
array (
0 => 'PTAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '1',
'min_bags' => '1',
'price' => '121.15',
)),
23 =>
stdClass::__set_state(array(
'description' => 'Luxury Convertible',
'codes' =>
array (
0 => 'LTAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '1',
'min_bags' => '1',
'price' => '129.01',
)),
24 =>
stdClass::__set_state(array(
'description' => 'Premium Van',
'codes' =>
array (
0 => 'PVAR',
),
'max_people' => '15',
'min_people' => '15',
'max_bags' => '1',
'min_bags' => '1',
'price' => '159.49',
)),
25 =>
stdClass::__set_state(array(
'description' => 'Specialty Convertible',
'codes' =>
array (
0 => 'XTAR',
),
'max_people' => '4',
'min_people' => '4',
'max_bags' => '2',
'min_bags' => '2',
'price' => '307.64',
)),
)
代码：
usort($car_types,function($a,$b) {
return $a->price == $b->price ? 0 : $a->price > $b->price;
});
usort($car_types, function($a, $b) use ($order) {
$a_set = intval(isset($order[$a->description]));
$b_set = intval(isset($order[$b->description]));
return $a_set === $b_set && $a_set === 1
? $order[$a->description] - $order[$b->description]
: $b_set - $a_set;
});
答案 0 :(得分：0)
定义排序数组并在usort中使用它：
$order = [
'Economy Car' => 1,
'Compact Car' => 2,
'Mid-Size Car' => 3,
'Standard-Size Car' => 4,
'Full-Size Car' => 5,
'Premium Car' => 6,
'Luxury Car' => 7,
'Standard-Size Convertible' => 8,
'Mid-Size SUV' => 9,
'Standard SUV' => 10,
'Full-Size SUV' => 11,
'Minivan' => 12
];
usort($car_types, function ($a, $b) use ($order) {
static $notSetPriority;
$aPriority = isset($order[$a->description])
? $order[$a->description]
: $notSetPriority ?? ($notSetPriority = count($order) + 1);
$bPriority = isset($order[$b->description])
? $order[$b->description]
: $notSetPriority;
if (($comparison = $aPriority - $bPriority ) === 0) {
return floatval($a->price) - floatval($b->price);
}
return $comparison;
});
如果没有设置描述的订单权重，那么我们给它一个最重量加一的权重。
不要多次应用usort，因为很难以这种方式预测结果。我已将两种排序标准合并为一种。