How are the versions different in composer?

Question

Composer

For example "^1.0" and "~1.0" according to the doc https://getcomposer.org/doc/articles/versions.md#v... they will both update to 1.9.9 but different characters must be used for something and not alone?

Answer 1

For example ^1.2.3 is equivalent to >=1.2.3 <2.0.0

The ~ operator is best explained by example: ~1.2 is equivalent to >=1.2 <2.0.0, while ~1.2.3 is equivalent to >=1.2.3 <1.3.0