PHP从主阵列删除子数组，如果特定的值范围内被发现 [英] PHP Remove subarray from main array if specific value range is found

问题描述

可以说我有以下数组：

  [9] => Array
    (
        [0] => Bob Smith
        [1] => [e-mail]
        [2] => Helsinki
        [3] => 10
        [4] => 34
        [5] => 2014-05-12
    )

[10] => Array
    (
        [0] => John Smith
        [1] => [e-mail]
        [2] => some values
        [3] => 9
        [4] => 67
        [5] => 2014-05-15
    )

[11] => Array
    (
        [0] => Clarke Kent
        [1] => [e-mail]
        [2] => Crystal
        [3] => 9
        [4] => 89 
        [5] => 2014-05-16
    )

如果我想删除一个子阵的日期落在特定的范围之外。所以，如果我说想找到数据所在的日期是2014年5月14日和2014年5月28日之间。然后，（新）阵列将打印以下内容：

What if i want to remove a subarray when the date falls outside a specific range. So if i say wanted to find data where the date is between 2014-05-14 and 2014-05-28. Then the (new) array would print the following:

 [10] => Array
    (
        [0] => John Smith
        [1] => [e-mail]
        [2] => some values
        [3] => 9
        [4] => 67
        [5] => 2014-05-15
    )

[11] => Array
    (
        [0] => Clarke Kent
        [1] => [e-mail]
        [2] => Crystal
        [3] => 9
        [4] => 89 
        [5] => 2014-05-16
    )

我觉得类似如下：

I thought something like the following:

 foreach ($array as $row) {
     if($row[5] >= '2014-05-14' && $row[5] <= '2014-05-14') {
    // Do Something // e.g. unset subarray?
  }

}

或者我应该区别对待它，并通过遍历数组，如果一个子阵符合我的标准创建一个新的数组。其结果是与包含符合我的约会日期范围子数组的数组。我希望这是有道理的，我试图找到最有效的方式来做到这一点。

OR should i approach it differently and iterate through the array and if a subarray matches my criteria create a new array. The result being an array with subarrays that contain dates that meet my date range. I hope this makes sense, i am trying to find the most efficient way to do this.

感谢

推荐答案

​​有关使用情况下，我会亲自使用 array_filter ：

For the use case described, I would personally use array_filter:

$start_date = DateTime::createFromFormat('Y-m-d', '2014-05-14');
$end_date = DateTime::createFromFormat('Y-m-d', '2014-06-14');

$filtered_array = array_filter($array, function($row) use ($start_date, $end_date) {
                      $date = DateTime::createFromFormat('Y-m-d', $row[5]);
                      return $date >= $start_date && $date <= $end_date;
                  });

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