Array help in php

1

i have two table one for reservations and other one for users.With the code below i want to find all the users whose reservations are out to date. Then from that i want to return a multidimensional array containing their informations.
The problem I’m having is that when i read the array i only have informations for one user only. How can i do to add values to a multidimensional array with keys?

 function reservationsOutDate()
{
   $requete = mysql_query("SELECT*FROM reservations WHERE dateRetour <CURDATE();");
   $list = array();
   while($row = mysql_fetch_array($requete))
  {
    $userInfos = getInfos("users","userName",$row['userName']);
    //the function return an array containing the name, family name and email of the user

       $list = array(
                 $row['userName'] => array(
                                                     "name" => $userInfos['name'],
                                                     "familyName" => $userInfos['familyName'],
                                                     "email" => $userInfos['email']));
  }
  return $list;
}