通过部分匹配对php中的数组值进行分组

我有这样一个数组：

Array
(
    [0] => Saturday 19th January 2013 07:59:57 PM
    [1] => Sunday 20th January 2013 07:00:26 PM
    [2] => Monday 21st January 2013 02:08:15 PM
    [3] => Monday 21st January 2013 02:11:00 PM
    [4] => Monday 21st January 2013 02:41:02 PM
    [5] => Monday 21st January 2013 02:42:14 PM
    [6] => Monday 21st January 2013 03:03:34 PM
    [7] => Monday 21st January 2013 03:07:39 PM
    [8] => Monday 21st January 2013 03:37:11 PM
    [9] => Monday 21st January 2013 03:37:52 PM
    [10] => Monday 21st January 2013 04:14:08 PM
    [11] => Monday 21st January 2013 04:16:38 PM
    [12] => Monday 21st January 2013 04:19:18 PM
    [13] => Monday 21st January 2013 05:45:17 PM
    [14] => Monday 21st January 2013 06:39:04 PM
    [15] => Monday 21st January 2013 08:01:56 PM
    [16] => Monday 21st January 2013 08:03:23 PM
    [17] => Monday 21st January 2013 08:12:15 PM
    [18] => Monday 21st January 2013 08:15:20 PM
    [19] => Monday 21st January 2013 08:29:57 PM
    [20] => Monday 21st January 2013 09:57:25 PM
    [21] => Tuesday 22nd January 2013 01:57:59 AM
    [22] => Tuesday 22nd January 2013 06:39:34 AM
    [23] => Tuesday 22nd January 2013 11:38:25 AM
    [24] => Tuesday 22nd January 2013 03:21:08 PM
    [25] => Tuesday 22nd January 2013 04:09:36 PM
}

我希望将此阵列分组，以便获得：

Array
(
    [Saturday 19th January 2013 07:59:57 PM] => 1
    [Sunday 20th January 2013 07:00:26 PM] => 1
    [Monday 21st January 2013 02:08:15 PM] => 19
    [Tuesday 22nd January 2013 01:57:59 AM] => 5
   }

这里的关键应该是匹配20-23个字符的前一个数组中的匹配值，该值是前一个数组中匹配值的计数，我一直在仔细研究这个问题。 如有任何帮助，我将不胜感激

这是可行的（尽管新阵列不能保持时间，这可能更可取）：

如果您想知道时间，请使用以下命令：

foreach ($array as $date)
{

  $name = date('l jS F Y', strtotime($date));

  $time = substr($date, -11);

  if (!isset($times[$name]))
  {
    $newArray[$name . ' ' . $times[$name] = $time] = 1;
  }

  else
  {
    ++$newArray[$name . ' ' . $times[$name]];
  }

}

---

这个问题没有显示出任何研究成果。做家庭作业很重要。告诉我们你发现了什么，为什么它不能满足你的需要。这表明你花了时间来帮助自己，这使我们不必重复显而易见的答案，而且最重要的是，这有助于你得到更具体、更相关的答案。

foreach ($array as $date)
{

  $name = date('l jS F Y', strtotime($date));

  $time = substr($date, -11);

  if (!isset($times[$name]))
  {
    $newArray[$name . ' ' . $times[$name] = $time] = 1;
  }

  else
  {
    ++$newArray[$name . ' ' . $times[$name]];
  }

}