这是官网的话
Caret#
The ^ operator behaves very similarly but it sticks closer to semantic versioning, and will always allow non-breaking updates. For example ^1.2.3 is equivalent to >=1.2.3 =0.3.0
This is the recommended operator for maximum interoperability when writing library code.
Example: ^1.2.3
Composer
这是官网的话
Caret#
The ^ operator behaves very similarly but it sticks closer to semantic versioning, and will always allow non-breaking updates. For example ^1.2.3 is equivalent to >=1.2.3 =0.3.0
This is the recommended operator for maximum interoperability when writing library code.
Example: ^1.2.3
Composer
@查尔斯 ~
和^
的意思很接近,在x.y
的情况下是一样的都是代表x.y ,但是在版本号是<code>x.y.z
的情况下有区别,举个例子吧:
~1.2.3
代表 1.2.3
^1.2.3
代表 1.2.3
详见: https://getcomposer.org/doc/a...
感谢 @北月武士 指正
^符号意思,用于匹配下一个重要版本
举例:
composer.json
<code>{ "require": { "topthink/framework": "^5.0-rc1" } }</code>
执行sudo composer install 以后效果如下
匹配到了composer库详情页的最新一个重要版本
https://packagist.org/package...
另外备注下:犯这个错误是因为一个前提条件,我一般只关心次版本号,而不会关心修正号,所以如果你一直指定~x.y和^x.y的确是一样的,哪怕库的版本号就是用x.y.z的版本规范命名的