Find if multi-dimensional array is empty

Checking for emptinessin quite simple using php. Following function can be used to check if a multidimensional array is empty or not.
The code loops through all the values in multi-dimensional array to check for empty values.

$food = array(
     'fruits' => array('', '', ''),
               'veggie' => array('', '', ''),
     "test" => ""
    );
//set the empty  count to 0
 $countEmpty = 0;
 //set number of keys count to 0
 $countKey = 0;
foreach($food as $key => $val) {
 if(is_array($val)) {
  //loop through each values inside
  foreach($val as $key1 => $val1) {
   $val = trim($val);
   if(empty($val1)) {
    //empty value-- increment the empty value count
    $countEmpty++;
   }
   //increment the key count
   $countKey++;
  }
 }
 else {
  $countKey++;
  $val = trim($val);
  if(empty($val)) {
   $countEmpty++;
  }
 }
}
if($countKey == $countEmpty) {
 echo "Array is empty..!";
}
else {
 echo "Array contains".($countKey - $countEmpty)." value(s)";
}
echo "
";
echo "Keys:".$countKey."
";
echo "Empty:".$countEmpty;
?>