23 design patterns for PHP 1

This article introduces the 23 design patterns of PHP 1, which has certain reference value. Now I share it with you. Friends in need can refer to it

1. Design Patterns Classification

Generally speaking, design patterns are divided into three categories:

Creative patterns, a total of five types: factory method pattern, abstract factory pattern, singleton pattern, builder pattern, prototype pattern .

There are seven structural modes: adapter mode, decorator mode, proxy mode, appearance mode, bridge mode, combination mode, and flyweight mode.

Behavioral patterns, eleven in total: strategy pattern, template method pattern, observer pattern, iterative sub-pattern, chain of responsibility pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern , interpreter mode.

In fact, there are two categories: concurrent mode and thread pool mode

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