Regular Expressions 101

Pro

GBthe literal text GB (case sensitive)

Group 1(\s?\d){9}

{9}repeats the group contents below exactly 9 times:

\s?optionally matches any whitespace character

\da digit

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

26 tokens

GB(\s?\d){9}

New

GB009000909
GB 009000909
GB00 9 00 0 909
GB00 9 000 9 09
GB0 0 9 0 0 0 9 0 9
GB00 90 00 909
GB009 000909
GB00900 090 9

GB009000909
GB 009000909
GB00 9 00 0 909
GB00 9 000 9 09
GB0 0 9 0 0 0 9 0 9
GB00 90 00 909
GB009 000909
GB00900 090 9