What are the differences between Objective-PHP and Objective-C?

If you are coming from an Objective-C background you should read this list. I want this list to a detailed an exhaustive list of differences so please Contact me if anything is missing.

• Message -initialise is sent to each object, top down (parents first), when they are first created, which will be when the first reference to them is encountered (as getInstance will be called by the runtime). This will only happen though when the object is about to be used so it still effectively implements the lazy initialization. In ObjC the call is made first time a message is sent. The difference is subtle but there. The ObjPHP way you do not need to check the initialised flag everytime you call objphp_msgSend so this should help performance (in ObjC initialised is checked everytime msgSend is called).

• Classes are created using @implementation only (no use of @interface). This follows the logic of the Objective-J developers, that @interface is really not necessary and all the methods plus class definition can be contained in @implementation.

Document status: INCOMPLETE for current version.