change the value of the array

The $z array is being preserved in the foreach loop. Change it to this:

PHP Code:

foreach ($data as $key => $value)
{
    $z = array();
    
    foreach (explode(',', $value["income_country"]) as $val)
    {
        preg_match('#([0-9]+)([A-Z]+)#',$val,$extrack);
        $a = $extrack[1];
        $b = $extrack[2];
        if (isset($z[$b])) {
         $z[$b] += $a;
        }
        else {
         $z[$b] = $a;
        }
        arsort($z);
    }
    $data[$key]["income_country"] = $z;
} 


this works thank you very much