如何使用PHP数组中的数字来识别和重命名重复的值？

Question

我有一个PHP数组如下：

Array
(
    [0] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) 
    [1] =>   Microsoft Network Adapter Multiplexor Driver 
    [2] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) #75 
    [3] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) 
)

我需要从PHP数组中识别重复的值，并在末尾使用数字重命名，如下所示，

Array
(
    [0] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_1 
    [1] =>   Microsoft Network Adapter Multiplexor Driver 
    [2] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) #75 
    [3] =>   QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_2 
)

我尝试过array_count_values()来检测重复的，但是我如何重命名它呢？https://onlinephp.io/c/739cb

Answer 1

这应该能起作用：

$originalArray = array(
  "QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)",
  "Microsoft Network Adapter Multiplexor Driver",
  "Microsoft Network Adapter Multiplexor Driver Simplified",
  "QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) #75",
  "QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)",
  "Microsoft Network Adapter Multiplexor Driver",
  "QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)",
  "QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)",
);

$arrayCountVals = array_count_values($originalArray);
foreach ($arrayCountVals as $key => $count) {
  $increment = 1;
  if ($count === 1) continue;
  foreach ($originalArray as $k => $entry) {
    if ($entry === $key) {
      $originalArray[$k] = $entry . "_" . ($increment);
      $increment += 1;
    }
  }
}

这将更改原始数组，因此如果您可能希望创建副本，并在需要维护原始副本时更新该副本。但是，由于您的数组来源没有包含在您的代码中，我不确定您是否需要这个。

Answer 2

创建不止一次发生的值的查找数组。然后迭代输入数组(通过引用修改值)，并有条件地增加值的计数器并将其附加到字符串中。

代码：(演示)

$lookup = [];
foreach (array_count_values($array) as $value => $count) {
    if ($count > 1) {
        $lookup[$value] = 0;
    }
}
foreach ($array as &$value) {
    $value .= (isset($lookup[$value]) ? "_" . ++$lookup[$value] : '');
}

var_export($array);

输出：

array (
  0 => 'QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_1',
  1 => 'Microsoft Network Adapter Multiplexor Driver_1',
  2 => 'Microsoft Network Adapter Multiplexor Driver Simplified',
  3 => 'QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client) #75',
  4 => 'QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_2',
  5 => 'Microsoft Network Adapter Multiplexor Driver_2',
  6 => 'QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_3',
  7 => 'QLogic BCM57810 10 Gigabit Ethernet (NDIS VBD Client)_4',
)

如果您喜欢紧凑的代码，那么查找数组的填充可以如下所示：

$lookup = array_map(fn() => 0, array_diff(array_count_values($array), [1]));