当重复某个值时，如何将数组连接到自身

Question

我有一个包含员工项目的数组。有些员工有多个记录，因此有多个阵列。 例。最多可能有5条记录。

[7] => Array
    (
        [emp_num] => 13
        [emp_name] => SMITH, BILL                                  
        [appropriation1] => 51000550000              
        [hours1] => 80.00
        [sal/rate1] => 500.00
        [default_pay] => Y
        [total_hours] => 82.00
        [gross] => 537.50
    )

[8] => Array
    (
        [emp_num] => 13
        [emp_name] => SMITH, Bill                                  
        [appropriation1] => 51000550005              
        [hours1] => .00
        [sal/rate1] => .00
        [default_pay] =>  
        [total_hours] => 82.00
        [gross] => 537.50
    )

[appropriation1]，[hours1]，[sal / rate1]是唯一重复的东西。所以我想最终得到

[7] => Array
   (
    [emp_num] => 13
    [emp_name] => SMITH, BILL                                  
    [appropriation1] => 51000550000
    [appropriation2] => 51000550005
    [appropriation3] => 51000550005
    [appropriation4] => 51000550005
    [appropriation5] => 51000550005              
    [hours1] => 80.00
    [hours2] => .00
    [hours3] => .00
    [hours4] => .00
    [hours5] => .00
    [sal/rate1] => 500.00
    [sal/rate2] => .00
    [sal/rate3] => .00
    [sal/rate4] => .00
    [sal/rate5] => .00
    [default_pay] => Y
    [total_hours] => 82.00
    [gross] => 537.50
)

在sql中这会更容易吗？我只知道基本的sql，但是如果我将表连接到自身，我是否能够创建列而不是尝试操作数组？甚至可以看一看？

继承人基本的sql

 select employeenumber,EMPLOYEENAME, APPROPRIATION, TOTALHOURS as hours, PAYSALRATE, DEFAULTPAYCODE
  from DET
  where RECTYPEIND = 'D'