How to get the minimum value from array row

Question

I trying to get the minimum values from the any column contains \"xx\" in the column name.

Below is my code:

Answer 1

function find_lowest($array){
        $new_array = array();
        foreach($array  as $key => $val ){
            if(is_array($val)){
                $new_array[$key] = find_lowest($val);
            }else{
                $new_array[$key] =  $val ;
            }
        }
        return min($new_array);

    }
    $array = array( array(  'id' => 1,
  '10xx' => 14,
  '11xx' => 32,
  '12xx' => 4
 ),

  array(
   'id' => 2,
  '10xx' => 13,
  '11xx' => 36,
  '12xx' => 41
 )
);
 echo find_lowest($array);