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The study of object-oriented development in PHP

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PHP Learning for object-oriented development (i)

Own things to do on their own

3 main features of object-oriented: (Encapsulation, inheritance, polymorphism) indispensable

Encapsulation: encapsulating something of similar content as a class

Inheritance: The habit or property of a parent, as inherited or hereditary by me.

Polymorphic: Run-time loading

Class cannot be used directly

__CONSTRUCTC () initializing an object

Package keyword: public (externally accessible), protected,prirate (accessible only in subclasses),

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