PHP　array_multisortの使い方

nameでソート

foreach ($customer as $key => $value){
$key_name[$key] = $value[name];
}
array_multisort( $key_name,SORT_ASC, $customer);




telでソート後、nameでソート

foreach ($customer as $key => $value){
$key_name[$key] = $value[name];
$key_tel[$key] = $value[tel];
}
array_multisort(
$key_tel,SORT_ASC,
$key_name,SORT_ASC,
$customer
);