C＃中的正则表达式用于电话号码 [英] Regular expression in C# for phone number

问题描述

我有匹配电话号码的表达式：

i Have that expression for matching phone numbers:

Quote：

@（\ + [0 -9] {2} | + \ [0-9] {2} \（0\）| \（\ + [0-9] {2} \）\（0\） | 00 [0-9] {2} | 0）（[0-9] {9} | [0-9 \-\s] {9,18}）;

@"(\+[0-9]{2}|\+[0-9]{2}\(0\)|\(\+[0-9]{2}\)\(0\)|00[0-9]{2}|0)([0-9]{9}|[0-9\-\s]{9,18})";

但我想从文本文件中识别德国电话号码：

格式为：0176/21425679

0157764123813

09621 11 85 45

0172 8622111

08103/30 444 30

[phone]



如何识别这些类型的电话号码。

我的表达工作但不完全正确。



我尝试了什么：

but i want to identify German phone number from text file:
formats are: 0176/21425679
0157764123813
09621 11 85 45
0172 8622111
08103 / 30 444 30
[phone]

how can identify these type of phone numbers.
my expression working but not exactly.

What I have tried:

<pre>@"(\+[0-9]{2}|\+[0-9]{2}\(0\)|\(\+[0-9]{2}\)\(0\)|00[0-9]{2}|0)([0-9]{9}|[0-9\-\s]{9,18})";

C＃

C#

推荐答案

首先取决于你需要什么：

只需验证是否它是有效的（德国）电话号码或以定义的格式获取号码。



无论如何，将处理分成多个部分可能更好。



所以你可以先用一个'0'替换可选的国际前缀：

At first it depends on what you need:
Just verify if it is a valid (German) phone number or get the number in a defined format.

In any case it might be better to split the processing into multiple parts.

So you might for example replace the optional international prefix with a single '0' at first:

/^\+[0-9]{2}[^0-9]*/0/
# or
/^\+[0-9]{2}[ -/]*/0/

如果您需要单独获取区号，请查找下一个非数字字符。但这对所有输入都不起作用。



最后删除所有分隔/分隔符（空格，减号，斜线）。最后一个字符串应该只包含数字，并且可以检查min。最多允许的长度。

If you need to get the area code separately look for the next non-digit character. But that will not work for all inputs.

Finally remove all separation / delimiter characters (space, minus, slash). The final string should contain digits only and can be checked for min. and max. allowed length.

Quote：

如何识别这些类型的电话号码。

how can identify these type of phone numbers.

您永远无法知道某个号码是电话号码还是电话号码，具体取决于具体情况。

据我所知，德国电话号码有所不同比特数。

+49是德国的国际标题。

空格和破折号是人工分隔符，具体取决于用户，分组可以有所不同，使数字更容易记住。

我会尝试类似的东西：

You can never know if a number is a phone number or look like a phone number, it depend on context.
As fa as I know, German phone number comes with different number of digits.
+49 is the international header to Germany.
Spaces and dashes are artificial separators depending on user, and grouping can differ to make number easier to remember.
I would try something like:

((\+49[ /]*)?(\d[ /]*){10,11}\d)

以下是RegEx文档的链接：

perlre - perldoc.perl.org [ ^ ]

以下是帮助构建RegEx并调试它们的工具的链接：

。NET Regex Tester - Regex Storm [ ^ ]

Expresso正则表达式工具 [ ^ ]

RegExr：学习，构建，和测试RegEx [ ^ ]

此节目RegEx是一个很好的图表，它非常有助于理解RegEx的作用：

Debuggex：在线可视正则表达式测试器。 JavaScript，Python和PCRE。 [ ^ ]

Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx:
Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]

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