Regular Expressions 101

Pro

facebookthe literal text facebook (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:photo.php\?v=|video\/embed\?video_id=|v\/?)

1st Alternativephoto.php\?v=

photothe literal text photo (case insensitive)

.any character (except for line terminators)

phpthe literal text php (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

v=the literal text v= (case insensitive)

2nd Alternativevideo\/embed\?video_id=

videothe literal text video (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

embedthe literal text embed (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

video_id=the literal text video_id= (case insensitive)

3rd Alternativev\/?

vthe literal v (118₁₀ / 166₈ / 76₁₆) (case insensitive)

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

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

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

facebook\.com\/(?:photo.php\?v=|video\/embed\?video_id=|v\/?)(\d+)

New

https://www.facebook.com/photo.php?v=0123456789&set=t.674367&type=3&theater
http://www.facebook.com/video/embed?video_id=0123456789
http://www.facebook.com/v/0123456789

Extraction

https://www.facebook.com/photo.php?v=0123456789&set=t.674367&type=3&theater
http://www.facebook.com/video/embed?video_id=0123456789
http://www.facebook.com/v/0123456789