PHP中嵌套多维数组的多维数组

I have an array like so:

我有一个像这样的数组:

   sid         sname               did               dname
    1         Basketball            1                 Mini
    1         Basketball            3                 Cadet
    2         Baseball              8             Little League
    2         Baseball              6             Junior League
    1         Basketball            5                Masters
   sid