What is the composer package

What is the composer package?

composer package refers to packaged code, that is, components, which are used to solve a certain problem in actual projects. For example, if you want to output a beautiful piece of data and get rid of the var_dump and print_r functions, then we can use the component var-dumper component; if we want to write logs, we can use monolog. These components have been developed by PHP developers. When we have such a scenario in the project, we can use them directly.

Recommended: [composer tutorial]

Why use components?

To sum it up in one sentence: Others have already built wheels, why don’t we use them? We don't need to reimplement the functions that have already been implemented. We should spend more time on the long-term goals of the project.

Characteristics of components

When we use PHP components, we must first determine whether the component is what we need, and whether some functions are not rigorous, like Buying vegetables at the wet market can be both good and bad. Such good components basically have these characteristics:

Single function

A component has a single function and can solve a problem very well. Just like we usually write methods in projects, a method only does one thing.

Small

There is not much code in the PHP component because it is produced only to solve a certain problem.

Cooperation

PHP components can cooperate well with each other. PHP components can cooperate with each other to solve more complex problems. Moreover, the components will be placed in their own namespace, so when we introduce them, they will not conflict with other components.

Good test

The PHP component is very convenient to test because of its small size.

Complete documentation

The documentation of the PHP component should be complete, allowing developers to quickly understand the installation and use of this component.

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