<div>
What is the format of the taxid numbers?<br />
<br />

<hr />
»<b><i>bp</i></b>
</div>


What is the format of the taxid numbers?



----------------------------------------

»bp

<div>
<div class="content wysiwyg-content">
I have a regex function like this<br />
<br />
^[0-9]\\d?-\\d{7}+;+([0-9]<wbr />\\d?-\\d{7<wbr />})*$<br />
<br />
But I have a long text field where I enter multiple tax id numbers with semicolon. How to modify or allow this feature. Sometimes I only enter one tax id. How to handle this
</div>
</div>


I have a regex function like this

^[0-9]\\d?-\\d{7}+;+([0-9]\\d?-\\d{7})*$

But I have a long text field where I enter multiple tax id numbers with semicolon. How to modify or allow this feature. Sometimes I only enter one tax id. How to handle this

How to get RegEx function for multiple tax id numbers

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.