在对象数组列表中查找唯一值并根据php中的唯一值创建单独的数组

Question

我有像这样的数组对象列表

feedbasestatsobjectlist->
                  statslist->
                      [0]->timetype = "hour"
                           timestamp = "408069"
                           event = "release"
                      [1]->timetype="min"
                           timestamp = "24484150"
                           event = "release"
                      [2]->timetype = "hour"
                           timestamp = "408069"
                           event = "success"
                      [3]->timetype="min"
                           timestamp = "24484150"
                           event = "success"
                      [4]->timetype = "hour"
                           timestamp = "408069"
                           event = "something"
                      [5]->timetype="min"
                           timestamp = "24484151"
                           event = "something"

现在迭代这个数组对象列表我想根据值创建3个seprate数组。 第一个数组的值为timetype = hour，时间戳= 4048069 所以数组将是

array_1->
      timetype = 'hour'
      timestamp = '408069'
      event = 'release','success','something'
array_2->
       timetype = 'min'
      timestamp = '24484150'
      event = 'release','success'
 array_3->
       timetype = 'min'
       timestamp = '24484151'
       event = 'something'

所以基本上将相同的时间戳值组合成单独的数组。 任何帮助将不胜感激