javascript - Manage json data outside ajaxform

I am using the well known ajaxForm Jquery Form Plugin (http://jquery.malsup.com/form/). I 'll present to you my code:

HTML code:

<script type="text/javascript">
$(document).ready(function() { 
$('#users_form1').ajaxForm({ 
    dataType:  'json', 
    success:   processJson           
  });
}); 

function processJson(data) { 
  $("#first").val(data[1].elem1);    
  $("#second").val(data[1].elem2);
}
</script>
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PHP code:

  ... 
  $result=$db->query($query);        
    if ($result->num_rows>=1) 
    {     
      $counter=0;   
      while ($row = $result->fetch_assoc()) { 
         $counter++; 
         $data1=$row["req_created"];            
         $data2=$row["subject"];
         $temp[$counter] = array(
            'elem1' => $data1,
            'elem2' => $data2,
         );
      }
       echo json_encode($temp); 
    }     
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As you may see from the above code, $temp is passed to var data inside function processJson. I'd like to know if array $temp is accessible outside processJson? For example, I want to choose $temp[3]["elem2"] upon a button click, however is it possible to get this data without searching again the database? If yes, how?

Thank you very much