array_splice with multidimensional arrays?

Question

Okay so I'm fairly new to PHP and I am currently experimenting with arrays. As an example, lets assume this is my array:

    $t1 = array (
  "basicInfo" => array (
   "The Sineps",
   "December 25, 2010",
   "lemonpole_1g"
  ),
  "overallRecord" => array (
   "23",
   "12",
   "19",
   ""
  )
);

From what I could gather, I found out that the function array_splice allows me to point to a specific index in the array and add/remove data. From all of the examples that I've seen using this function...only numeric arrays were used. Now my question is how would I point to ["overallRecord"][3](which is empty) for example, and update that field?

For further understanding that empty field is for "total points":

$wins = $t1["overallRecord"][0] * 3;
$loss = $t1["overallRecord"][1];
$draw = $t1["overallRecord"][2];
$total = $wins + $draw;

So to sum it all up, I'd like to add the variable $total to ["overallRecord"][3]. It doesn't necessarily have to be with array_splice, however, if you come up with a different method to achieve this try and keep it simple or add comments please :)

Thanks in advance!

Answer 1

If I understand correctly, simply do

$t1["overallRecord"][3] = $total;

Answer 2

$t1["overallRecord"][3] = $total;