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Design Pattern History

The term “design pattern” was originally coined in the field of architecture. Christopher Alexander, in his 1977 work, “A Pattern Language: Towns/Building/Construction,” describes common issues of architectural design and explains how new, effective designs can be created through the aggregation of existing, well-known patterns. Alexander’s concepts translate well into software development, where it’s long been desirable to construct solutions from previously existing components.

All design patterns have several common characteristics: a name, a problem statement, and a solution.

• The name of a design pattern is important, because it allows you to instantly communicate the intent of your code with other programmers—at least programmers familiar with patterns—without going into too much detail.
• The problem is the domain where the pattern can be applied.
• The solution describes the implementation of the pattern.

I attach here one part of my code made in PHP.
Code Source -

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