I have a big excel file that looks like this:

I would like to put each row into an array.
Is this possible to access the first row’s order id like this?
$result[0][2] // returns 7432
Assuming the actual first row that gives prefix for the columns’ name is not present.
How could I do that?
Save the spreadsheet as a CSV, then use PHP’s built-in CSV functions. See the sample code here:
http://php.net/manual/en/function.fgetcsv.php