Normal or arrayed query string.

[Slyke]

So I have the following function that's grabbing some data from the query string:

function getQueryData($dataToGet, $queryIndex=-1)
{
// WARNING: This needs to have inputs sanitized. Do not have this accessible from the internet until this is done! Look at the "filter_input" funtion in PHP's documentation.
  if ($queryIndex > -1) {
    if (isset($_REQUEST[$dataToGet][$queryIndex])) {
      $outputString=$_REQUEST[$dataToGet][$queryIndex];
    } else {
      if ($_REQUEST[$dataToGet]!="") {
        $outputString=$_REQUEST[$dataToGet];
      } else {  
        $outputString="";
      }
    }
  } else {
    $outputString=$_REQUEST[$dataToGet];
  }

  return $outputString;
} 

Here's what it should do:
When calling this function I'm using this way for loops (If the query string supplied is in an array):

$someData=((getQueryData("somedata", $i) >= 1 || getQueryData("somedata", $i) !="") ? getQueryData("somedata", $i) : 123); 

And this way for non-arrayed query string parameter (Should also grab the first index in the array when no index is specified and the query string parameter is an array):

$someData=((getQueryData("somedata") >= 1 || getQueryData("somedata") !="") ? getQueryData("somedata") : 123); 

Here's an example way of running this from the query string:

&somedata[]=111&somedata[]=222&somedata[]=333

Which would make somedata[0]=111, somedata[1]=222, somedata[2]=333
or

&somedata=456&somedata[3]=111

Which would make the getQueryData function return 456 in all cases, except when index 3 is called.

Here's my problem:
This line:

$outputString=$_REQUEST[$dataToGet][$queryIndex]; 

Doesn't differentiate between proper arrays and splitting up integers/strings. So for example:

somedata[0]=111, somedata[1]=222, somedata[2]=333

getQueryData("somedata", 1); will just return 2, not 222.
I don't want it to split the string/integer up into an array.

Does anyone have a suggestion on how to achieve this?