regex - 正则表达式验证电话号码，确保其中没有字母

Question

我们有一个实时项目，我需要使用正则表达式过滤掉任何电话号码中的字母。

活着，我不能摆弄它，所以我在想这个正则表达式：

^[^a-zA-Z]*$

你认为它会成功吗？消除包含字母的电话号码？

作为一个多元文化的网站，你知道有哪个国家在电话号码中使用字母吗？

干杯!

Answer 1

Based on your current regex, I am assuming that you need a regex that will only match valid inputs.

Your current regex will work fine to prevent letters, but I think it would make more sense to figure out the minimum set of characters you consider valid and create a regex for that.

For example if you only want to allow digits you could use ^\d*$ or ^[0-9]*$.

To also allow spaces, hyphens, and parentheses so a number like (123) 456-7890 would be valid:

^[\d \-()]*$