Regular Expressions 101

Pro

^start of line

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

topicthe literal text topic (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:.+-)*

*repeats the group contents below any number of times:

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

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Group 1(\d+)

\d+a digit, repeated at least once

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

^\/topic\/(?:.+-)*(\d+)

New

/post/cho-minh-hoi-voi-kien-thuc-ve-cc-va-sql-o-truong-dai-hoc-da-du-de-thuc-tap-chua-vay-moi-nguoi-minh-2131321-nghe-may-nguoi-da-tot-nghiep-noi-la-luc-di-lam-nguoi-ta-ko-dung-nhung-kien-thuc-trong-truong-dai-1321321321