for each Statement and Multi dimensionals arrays

<?php


$food=array('healthy'=>array('salad','fruit','meat'),'unhealthy'=>array('cocacola','icecream','mcdonald'));

//$a es un arreglo y ahora b tambien es un arreglo

foreach( $food as $a=>$b) {


echo $a."<br>";


//b  es otro arreglo  q nace de a

foreach($b as $c)


echo $c."<br>";




}
?>

healthy
salad
fruit
meat
unhealthy
cocacola
icecream
mcdonald