error_reporting(E_ALL)和error_reporting(E_ALL&〜E_NOTICE)有什么区别 [英] What are differences between error_reporting(E_ALL) and error_reporting(E_ALL & ~E_NOTICE)

问题描述

谁能解释error_reporting(E_ALL);和error_reporting(E_ALL & ~E_NOTICE);之间的区别?

Could anyone explain differences between error_reporting(E_ALL); and error_reporting(E_ALL & ~E_NOTICE); ?

我注意到当我从E_ALL更改为E_ALL & ~E_NOTICE时，我正在破解的错误消失了.

I noticed that when I change from E_ALL to E_ALL & ~E_NOTICE, an error which I was hacking, disappears.

推荐答案

E_ALL是一切"

E_ALL is "everything"

E_ALL& 〜E_NOTICE是除通知外的所有内容"

E_ALL & ~E_NOTICE is "everything except notices"

通知是最不紧急的消息.但是它们对于捕获愚蠢的程序员错误非常有用，例如尝试使用不存在的键从哈希读取等.

Notices are the least-urgent kinds of messages. But they can be very useful for catching stupid programmer mistakes, like trying to read from a hash with a non-existent key, etc.

(要了解语法，请阅读按位运算符)

(To understand the syntax, read up on bitwise operators)

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