Regular Expressions 101

Pro

^start of line

Positive Lookahead(?=[a-z0-9-]{32,36}$)

Character Class[a-z0-9-]{32,36}

{32,36}matches between 32 and 36 characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

$end of line

Character Class[a-z0-9]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?:-[a-z0-9]+)*

*repeats the group contents below any number of times:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-z0-9]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$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.

25 tokens

^(?=[a-z0-9-]{32,36}$)[a-z0-9]+(?:-[a-z0-9]+)*$

New

d3bd55bf-062f-473b-9417-935f62c4c98a
d3bd55bf062f473b9417935f62c4c98a
d3bd-55bf062f473b9417935f62c4c98a
d3bd55-bf06-2f473b9417-935f62c4c98a

d3bd55bf-062f-473b-9417-935f62c4c98a
d3bd55bf062f473b9417935f62c4c98a
d3bd-55bf062f473b9417935f62c4c98a
d3bd55-bf06-2f473b9417-935f62c4c98a