regex101: PCRE (Legacy) Match Workspace

Group 1(.+?)

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

Group 2(\/)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(watch\x3Fv=)?

?repeats the group contents below at most once:

watchthe literal text watch (case sensitive)

\x3Fthe literal ? (3F₁₆ / 77₈ / 63₁₀)

v=the literal text v= (case sensitive)

Group 4(embed\/watch\x3Ffeature\=player_embedded\x26v=)?

?repeats the group contents below at most once:

embedthe literal text embed (case sensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

watchthe literal text watch (case sensitive)

\x3Fthe literal ? (3F₁₆ / 77₈ / 63₁₀)

featurethe literal text feature (case sensitive)

\=the literal = (61₁₀ / 75₈ / 3D₁₆)

player_embeddedthe literal text player_embedded (case sensitive)

\x26the literal & (26₁₆ / 46₈ / 38₁₀)

v=the literal text v= (case sensitive)

Group 5([a-zA-Z0-9_-]{11})+

+repeats the group contents below at least once:

Character Class[a-zA-Z0-9_-]{11}

{11}matches exactly 11 characters from the set below:

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

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

25 tokens

Regular Expression

(.+?)(\/)(watch\x3Fv=)?(embed\/watch\x3Ffeature\=player_embedded\x26v=)?([a-zA-Z0-9_-]{11})+

New

http://www.youtube.com/watch?v=iwGFalTRHDA
http://www.youtube.com/watch?v=iwGFalTRHDA&feature=related
http://youtu.be/iwGFalTRHDA
http://youtu.be/n17B_uFF4cA
http://www.youtube.com/embed/watch?feature=player_embedded&v=r5nB9u4jjy4
http://www.youtube.com/watch?v=t-ZRX8984sc
http://youtu.be/t-ZRX8984sc
https://youtu.be/2sFlFPmUfNo?t=1

Extraction

http://www.youtube.com/watch?v=iwGFalTRHDA
http://www.youtube.com/watch?v=iwGFalTRHDA&feature=related
http://youtu.be/iwGFalTRHDA
http://youtu.be/n17B_uFF4cA
http://www.youtube.com/embed/watch?feature=player_embedded&v=r5nB9u4jjy4
http://www.youtube.com/watch?v=t-ZRX8984sc
http://youtu.be/t-ZRX8984sc
https://youtu.be/2sFlFPmUfNo?t=1