Completed Step 2 of foreach.php exercise

Constructed a loop that iterates through the array and outputs each
value as their value type.
Completed Step 3 of foreach.php exercise

Constructed a loop that iterates through the array and outputs ONLY the
values that are scalar.
Completed Step 4 of foreach.php exercise

Created a loop that echoes out every value in the array, including
those in nested arrays.