Regular Expressions 101

\d*a digit, repeated any number of times

Character Class[a-z_]+

+matches at least one character from the set below:

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

\w*any word character, repeated any number of times

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\d*[a-z_]+\w*

New

Abcd abcd1a 5ever a qw3-fne superb5 1234 0 99ballons 5roses4you _abcdefg -9 0_avg self-employed.2 arg_c