es cuestion de logica
Código PHP:
Ver original
$a['frutas'] = [1,2,3,4,5,6];
$a['caramelos'] = [11,22,33,44,array(1'2,3,4),66];
foreach ($a as $v1)
{
if(is_array($v1))
{
foreach ($v1 as $v2)
{
if(is_array($v2)){
foreach ($v2 as $v3)
{
echo "$v3\n";
}
}else{
echo "$v2\n";
}
}
}
}