5
# Call our gcd() function
10
print "The gcd of $x and $y is $g\n";
12
# Manipulate the Foo global variable
14
# Output its current value
15
print "Foo = " . $Foo . "\n";
20
# See if the change took effect ( this isn't a good example for php, see
22
print "Foo = " . $Foo . "\n";