Regular Expressions 101

Pro

link=the literal text link= (case insensitive)

Group 1([a-z][a-z0-9_]*)

Character Class[a-z]

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

Character Class[a-z0-9_]*

*matches any number of characters from the set below:

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

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

27 tokens

link=([a-z][a-z0-9_]*)

New

link=he00l_lo link=123abcd Link=xabD3D_2
linK=s

link=he00l_lo link=123abcd Link=xabD3D_2
linK=s