Regular Expressions 101

^start of line

\da digit

Group 1([\s-]+\d){5,6}

{5,6}repeats the group contents below between 5 and 6 times:

Character Class[\s-]+

+matches at least one character from the set below:

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\da digit

$end of line

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.

Search reference

Regular Expression

^\d([\s-]+\d){5,6}$

1-2-3-4-5-6-7
1 2 3 4 5 6 7
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