我如何按特定列表顺序对一个Std类对象进行排序？

我有一个StdClass对象数组，它包含几种不同的车型（例如Compact Car，Minivan等），它们按价格排序。我想按照下面的顺序排序的数组：我如何按特定列表顺序对一个Std类对象进行排序？

经济轿车
紧凑型轿车
中级车
标准尺寸轿车
标准车
高级汽车
豪华车
标准尺寸敞篷车
中型SUV
标准SUV
全尺寸SUV
面包车
剩余车通过价格

排序我不知道，如果是有意义的解决这使用密钥“描述”或“代码”进行订购。我已经想出了如何按价格排序，但不知道如何按照上面列出的顺序重新排列数组。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; 
});

来源

2017-09-02 Michael Alterio

将“排序顺序”值添加到对象并使用该值进行排序。 – ryantxr

你需要给这些类型排序，然后你可以排序。或者你必须用这些名称创建一个预定义数组，然后根据这些名称对数组进行排序。 –

定义订货阵列，并用它内部usort：

$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; 
});

如果用于描述顺序重量不设置，那么我们给它一个最w的权重八加一。

不止一次应用usort，因为这样很难预测结果。我已将两个排序标准合并为一个。

来源

2017-09-03 01:03:44 sevavietl

非常感谢！太棒了。有一件事：对于没有按照订单定义的剩余车辆（例如中型特种车辆）...我如何按价格对剩余车辆进行分类？因此，例如在面包车应该来中型特种车辆，紧凑型SUV，标准尺寸皮卡，特种车辆等... –

@MichaelAlterio，首先按价格对数组进行排序（应用您在问题中指定的'usort' ），然后按描述进行排序（答案中的'usort'）。这应该做的伎俩。 – sevavietl

我已更新原始帖子，按价格排序（从最低到最高）输入数组。当我按价格进行分配，然后使用上面的订单余额时，它不会按订单之后的最低价格排序。有什么想法发生了什么？ –

我如何按特定列表顺序对一个Std类对象进行排序？

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