Is there a way in PHP5 to only allow a certain class or set of classes to call a particular function? For example, let's say I have three classes ("Foo", "Bar", and "Baz"), all with similarly-named methods, and I want Bar to be able to call Foo::foo() but deny Baz the ability to make that call:
class Foo {
static function foo() { print "foo"; }
}
class Bar {
static function bar() { Foo::foo(); print "bar"; } // Should work
}
class Baz {
static function baz() { Foo::foo; print "baz"; } // Should fail
}
Foo::foo(); // Should also fail
There's not necessarily inheritance between Foo, Bar, and Baz, so the use of protected or similar modifiers won't help; however, the methods aren't necessarily static (I made them so here for the simplicity of the example).
