array_multisort 二维数组指定键值排序

haozhongyang

测试数据data_list如下，需要按照sale_amount, amount 倒序

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array (
  0 => 
  array (
    'name' => '面包',
    'sale_amount' => 1,
    'amount' => 1,
  ),
  1 => 
  array (
    'name' => '牛奶',
    'sale_amount' => 10,
    'amount' => 5,
  ),
  2 => 
  array (
    'name' => '火腿',
    'sale_amount' => 6,
    'amount' => 2,
  ),
  3 => 
  array (
    'name' => '鸡肉',
    'sale_amount' => 12,
    'amount' => 1,
  ),
  4 => 
  array (
    'name' => '米饭',
    'sale_amount' => 6,
    'amount' => 6,
  ),
)

使用array_multisort函数

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foreach ($data_list as $k => $v) {
    $sale_amount[$k] = $v['sale_amount']; // 销售数量
    $amount[$k] = $v['amount']; // 库存数量
}
array_multisort($sale_amount, SORT_DESC, $amount, SORT_DESC, $data_list);

结果

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array (
  0 => 
  array (
    'name' => '鸡肉',
    'sale_amount' => 12,
    'amount' => 1,
  ),
  1 => 
  array (
    'name' => '牛奶',
    'sale_amount' => 10,
    'amount' => 5,
  ),
  2 => 
  array (
    'name' => '米饭',
    'sale_amount' => 6,
    'amount' => 6,
  ),
  3 => 
  array (
    'name' => '火腿',
    'sale_amount' => 6,
    'amount' => 2,
  ),
  4 => 
  array (
    'name' => '面包',
    'sale_amount' => 1,
    'amount' => 1,
  ),
)