问题描述
我使用RegEx验证用户电话号码。我有一套电话号码验证要求。我对RegEX不太了解。任何人都可以帮我提供匹配的reqex我的要求。验证非常简单。
I was using RegEx to validate user phone numbers. I have set of requirements for phone number validation. I dont have much idea about the RegEX. can anyone help me to provide a matching reqex for my requirement. Here the validation is very simple.
条件
1. It should allow numbers from 0-9.
2. It should allow + sign. (+ sign is not mandatory but not allow after even a single letter (ie: should be placed at front.)).
3. It should allow - sign. (- sign is also not mandatory and can be placed anywhere)
4. It should allow empty space everywhere.
5. No dots or no other chars allowed except the above said things.
正确值
+65-12345678
65-12345678
6512345678
65 12345678
65 123 45678
65 123-45678
+65 123-45678
1234
InCorrect值
12345+86666
123alpha
谢谢
推荐答案
只是为了帮助你构建一些概念。
以下正则表达式与您提供的前七个输入相匹配。
Just to help you build some concepts.
The following regex would match the first seven inputs you provided.
/^\+?\d{2}[- ]?\d{3}[- ]?\d{5}$/
\ +？将匹配 + 符号。其中的？使 + 符号可选。
\\ \\ d {2} 匹配两位数
[ - ]？匹配 - 或 （空格）。 ？会出现 - 或 （空格）可选。$
\d {5} 然后匹配5位数。
^ 和 $ 是开始和结束锚点。
\+? would match a + sign. The ? in it makes the + sign optional.\d{2} matches two digits[- ]? matches either a - or a (space). ? makes the occurrence of - or (space) optional.\d{5} then matches 5 digits.^ and $ are the start and end anchors.
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