〜运算符在这里是什么意思? [英] What does this ~ operator mean here?

问题描述

示例:

set_error_handler(array($this, 'handleError'), E_ALL & ~E_STRICT & ~E_WARNING & ~E_NOTICE);

那是什么意思?

推荐答案

它是按位而非运算符(也称为补语").也就是说，在~ $a中设置的位是在$a中未设置的位.

It is the bitwise not operator (also called "complement"). That is the bits set in ~ $a are those that are not set in $a.

那么

E_ALL & ~E_STRICT & ~E_WARNING & ~E_NOTICE

是在E_ALL中设置的位，而在E_STRICT，E_WARNING和E_NOTICE中未设置的位.这基本上表示所有错误，但严格错误，警告错误和注意错误除外.

is the bits set in E_ALL and those not set in E_STRICT, E_WARNING and E_NOTICE. This basically says all errors except strict, warning and notice errors.

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