To those array experts

I put another for loop around the above
for($i = 0; $i < $totalElements; $i++) {
  echo $i;
  print_r($data['dates2'][$i]
);
and i get

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Filename: controllers/diet_plan.php

Line Number: 723
1Array ( [23] => Array ( [cust] => 6 [item_date] => 2015-08-05 [item_hours] => 2.00 [item_amount] => 37.00 [cost] => 74 [total_cost] => 74 [cluster_tasks] => Array ( ) [jobs] => Array ( [name] => 3 Aireys Street Aireys Inlet ) ) )

so it isn't putting the first output into [0] of array - interesting - but i am not sure how to fix it because it looks like it should work to me...! please could u look for the line that i must have wrong somewhere - thank you
}