PHP中的两个冒号是什么意思?
当我们遇到这种情况时，我不知道它在做什么:
I don't know what it's doing when we have this situation:
Foo::Bar
它看起来像一条路径.
推荐答案
这(通常)用于访问类中的静态方法或属性.它被称为范围解析运算符，或 Paamayim Nekudotayim(这会导致一些令人惊讶的令人困惑的错误消息！).参见 http://www.php.net/manual/en/language.oop5.paamayim-nekudotayim.php.
That's (generally) for accessing a static method or property in a class. It's called the scope resolution operator, or Paamayim Nekudotayim (which leads to some amazingly confusing error messages!). See http://www.php.net/manual/en/language.oop5.paamayim-nekudotayim.php.
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