Estoy ejecutando un bucle:

$array = $_POST['d'];

foreach($array as $a){
    print_r($a);
}

$ array contiene la matriz (el número de matriz varía) y obtengo esto como resultado. Solo quiero saber cómo puedo llamar a estos valores individualmente en el bucle. por ejemplo: $ cosa = valor de metv en el bucle

Array ( 
   [1173627548] => Array ( 
     [num] => 1173627548 
     [methv] => dont know 
     [q1] => - 
     [q2] => - 
     [q3] => U 
     [q4] => - 
     [comm] => 
    ) 
) 

Lo siento si no estoy claro

print_r ($ array) muestra esto:

Array ( [0] => Array ( [1173627548] => Array ( [num] => 1173627548 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] => ) ) [1] => Array ( [1182868902] => Array ( [num] => 1182868902 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] => ) ) ) Array ( [0] => Array ( [1173627548] => Array ( [num] => 1173627548 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] => ) ) [1] => Array ( [1182868902] => Array ( [num] => 1182868902 [methv] => dont know [q1] => - [q2] => - [q3] => U [q4] => - [comm] => ) ) ) 

Nota: ahora tengo 2 matrices en esta matriz