Description:
------------
It would be nice to have a for...else construct like you see in other languages. 
This makes the code more compact and readable and it avoids the necessity to 
combine an if and a for loop.

Test script:
---------------
for ($val in $array) {
  echo $val.'<br />';
} else {
  echo 'No values found';
}

Expected result:
----------------
In the case of an empty array, the else part would be called. Without this 
construct the code would be as follows.

if (count($array) > 0) {
  for ($val in $array) {
    echo $val.'<br />';
  }
} else {
  echo 'No values found';
}