Regular Expressions 101

Pro

.+any character (except for line terminators), repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

a=the literal text a= (case sensitive)

Group 1([0-9]{3,4})

Character Class[0-9]{3,4}

{3,4}matches between 3 and 4 characters from the set below:

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

Regular Expression

.+\/\?a=([0-9]{3,4})$

New

http://www.test.com/test/test-test-test/?a=12
http://www.test.com/test-test/news/?a=734
http://www.test.com/test/?a=0987
http://www.test.com/test/test-test-test/?a=90235