Regular Expressions 101

Pro

^start of line

Character Class[\d_-]*

*matches any number of characters from the set below:

\da digit

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[a-zA-Z]

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[-\w]*

*matches any number of characters from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\wany word character

$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

Regular Expression

^[\d_-]*[a-zA-Z][-\w]*$

New

ecK3EnyGD8o
1s3get2-3ds
4bc2qfs2wrf
28yq389gfwg
3oyh8pw489p
abcdefghijk
abcde-fghi_jk
12345678910
18974107892351240891751928347819234
Stack Overflow
kjsad;kflj;klasdfkjalk;sdfjlkas
!&$@#)&&()%&*(#@$&(