正则表达式检查长度 [英] Regular Expression check length

问题描述

我一直在尝试为手机制作正则表达式，但似乎无法使其正常工作:

I have been trying to make a regular expression for my mobile phones but I can't seem to get it to work:

以下是我的正则表达式的条件:

Here are the conditions for my regular expression:

• 必须以 09
开头
• 总长度为 9

这是我的正则表达式:

[0]{1}[9]{1}[0-9]{7}

有效手机号码 [phone]

无效手机号码 [phone] || 09912345

推荐答案

最简单的方法:

^09[0-9]{7}$

说明:

^ 09 =>从09开始

^09 => begins by 09

[0-9] => 0到9之间的任意字符

[0-9] => any character between 0 and 9

{7}恰好是七次

$ =>以最新组([0-9] {7})结尾

$ => Ends with the latest group ([0-9]{7})

这篇关于正则表达式检查长度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！