Exceptions: SPL provides a set of standard Exception classes each meant to indicate a certain problem type.

异常：SPL规定了一套标准异常类，每个类都标识了一类确定的问题。

youdao

Exceptions: SPL provides a set of standard Exception classes each meant to indicate a certain problem type.

异常：SPL规定了一套标准异常类，每个类都标识了一类确定的问题。

youdao