如何删除非字母数字字符?

分类: 技术问答 • 2022-04-23 23:23:51

问题描述：

我需要从字符串中删除所有不在a-z A-Z 0-9集中或不包含空格的字符.

I need to remove all characters from a string which aren't in a-z A-Z 0-9 set or are not spaces.

有人能做到这一点吗?

答

听起来像您几乎已经知道您想做的一样，您基本上将其定义为正则表达式.

Sounds like you almost knew what you wanted to do already, you basically defined it as a regex.

preg_replace("/[^A-Za-z0-9 ]/", '', $string);