Результат:

Мой код >
$next_Data = json_decode('[{"EmployeeID":102,"DateTimeRecord":"7/31/2018 9:39:13 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"7/31/2018 9:39:13 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"7/31/2018 9:39:13 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:43:04 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:43:05 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:43:06 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:13:25 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:13:25 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"8/2/2018 20:13:25 PM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/1/2018 6:13:25 PM","InOut":"0"},
{"EmployeeID":102,"DateTimeRecord":"8/2/2018 6:54:12 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/2/2018 6:54:12 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/2/2018 6:54:12 AM","InOut":"1"},
{"EmployeeID":102,"DateTimeRecord":"8/2/2018 12:13:25 PM","InOut":"0"}]');
$next_Data = array_map("unserialize", array_unique(array_map("serialize", $next_Data)));
foreach ($next_Data as $key => $part)
{
$sort[$key] = strtotime($part->DateTimeRecord);
}
array_multisort($sort, SORT_ASC, $next_Data);
Подробнее здесь: https://stackoverflow.com/questions/519 ... -m-y-his-a