如何访问循环外的循环数组？

I am a newbie in php, and I have a problem with associative arrays when looped.

The array is an associative array of the form: $myarray = array('id'=>id, 'name'=>name, 'num1'=> 6.5, 'num2'=> 0.385);

It is being passed from a table into arrays dynamically.

<input type='text' name="myArray[<?php echo $row['id']; ?>]" value=''>

$myarray = $_POST['myArray']; // i.e  $myarray = $_POST['name'];

Then I loop through to get only the selected table rows from the index page

function addValues($x,$y,$z){return $x+$y+$z;}

foreach($myarray as $key=>$value)
{
    $result = mysql_query("SELECT * FROM `test_tbl` WHERE id IN($key)");
    if(!empty($value))
    {
    while ($row = mysql_fetch_array($result))
    {
// array number 1
    $val[] = array('id'=>$row['id'],
        'name'=>$row['name'],
        'Number1'=>$row['num1'],
        'Number2'=>$row['num2']);

}//end of loop

    }//end of condition

This is my problem:

I will like to add $value (from user input in text box) unto $row['num1'] and $row['num2'] addValues($value, $row['num1'], $row['num2'])// this does not react }

To simplify my question, is it possible to access processed data from a loop(like $row['num1'] and $row['num2'] from the while loop) and use it in a function (such as addValues) or another loop?

NB: I know mysql_ is deprecated, I am using PDO, but I want to understand the logic before going PDO.