<?php
$arr=array("futbol"=>array('conmebol','concacaf'=>'Mexico', 'uefa'=>(array('españa'=>'real madrid', 'francia'))));
foreach($arr as $federacion=>$valor){
foreach($valor as $pais=>$club){
if(is_array($club)){
foreach($club as $equipo => $i);
echo $i;
} else echo $club;
}
}