What does the composer ^ symbol mean?

Below, the composer tutorial column will introduce the composer ^ symbol to you. I hope it will be helpful to friends in need!

~ and ^ have very close meanings and are the same in the case of x.y It means x.y <= version number < (x 1).0, but there is a difference when the version number is x.y.z, for example:

• ~1.2.3 represents 1.2.3 <= version number< 1.3.0

• ^1.2.3 represents 1.2.3 <= version number< 2.0.0

See: https://getcomposer.org/doc/articles/versions.md

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