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_get() . "\n";
20 # See if the change took effect ( this isn't a good example for php, see
22 print "Foo = " . Foo_get() . "\n";