© Frank M. Kromann 2018
Frank M. KromannBeginning PHP and MySQLhttps://doi.org/10.1007/978-1-4302-6044-8_7

7. Advanced OOP Features

Frank M. Kromann1 
Aliso Viejo, CA, USA
Chapter 6 introduced the fundamentals of object-oriented programming (OOP). This chapter builds on that foundation by introducing several of PHP’s more advanced OOP features. Specifically, this chapter introduces the following five features:
  • Object cloning: PHP treats all objects as references and they can be created with the use of the new operator. With that in mind, how do you go about creating a copy of an object if all objects are treated as references? By cloning the object.

  • Inheritance: As discussed in Chapter 6, the ability to build class hierarchies through inheritance ...

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