Core PHP Programming, Third Edition

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Chapter 18. Object Layers

Topics in This Chapter

The functions in this chapter allow you to interface with external object layers. Generally, PHP instantiates an object from another environment and thereafter treats it as a native object. COM and CORBA are two competing standards for packaging reusable functionality into objects that any programming language may use. Java is a programming language, but to PHP it appears as another system with external objects.

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