regex101: PCRE2 (PHP) Match Workspace

^start of line

httpthe literal text http (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:(?:youtu\.be\/)|(?:(?:www\.)?youtube\.com\/(?:(?:watch\?(?:[^&]+&)?vi?=)|(?:vi?\/)|(?:shorts\/))))

1st Alternative(?:youtu\.be\/)

Non-Capturing Group(?:youtu\.be\/)

yoututhe literal text youtu (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

bethe literal text be (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative(?:(?:www\.)?youtube\.com\/(?:(?:watch\?(?:[^&]+&)?vi?=)|(?:vi?\/)|(?:shorts\/)))

Non-Capturing Group(?:(?:www\.)?youtube\.com\/(?:(?:watch\?(?:[^&]+&)?vi?=)|(?:vi?\/)|(?:shorts\/)))

Non-Capturing Group(?:www\.)?

?repeats the group contents below at most once:

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

youtubethe literal text youtube (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:(?:watch\?(?:[^&]+&)?vi?=)|(?:vi?\/)|(?:shorts\/))

1st Alternative(?:watch\?(?:[^&]+&)?vi?=)

Non-Capturing Group(?:watch\?(?:[^&]+&)?vi?=)

watchthe literal text watch (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Non-Capturing Group(?:[^&]+&)?

?repeats the group contents below at most once:

Negated Character Class[^&]+

+matches at least one character outside the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

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

i?optionally matches the literal i (105₁₀ / 151₈ / 69₁₆) (case insensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

2nd Alternative(?:vi?\/)

Non-Capturing Group(?:vi?\/)

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

i?optionally matches the literal i (105₁₀ / 151₈ / 69₁₆) (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternative(?:shorts\/)

Non-Capturing Group(?:shorts\/)

shortsthe literal text shorts (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 1([a-zA-Z0-9_-]{11,})

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

{11,}matches at least 11 characters from the set below:

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

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

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

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^https?:\/\/(?:(?:youtu\.be\/)|(?:(?:www\.)?youtube\.com\/(?:(?:watch\?(?:[^&]+&)?vi?=)|(?:vi?\/)|(?:shorts\/))))([a-zA-Z0-9_-]{11,})

New

https://youtu.be/NLqAF9hrVbY
http://www.youtube.com/v/NLqAF9hrVbY?fs=1&hl=en_US
https://www.youtube.com/watch?v=NLqAF9hrVbY
http://www.youtube.com/watch?v=JYArUl0TzhA&feature=featured
http://www.youtube.com/watch?v=cKZDdG9FTKY&feature=channel
http://www.youtube.com/watch?v=yZ-K7nCVnBI&playnext_from=TL&videos=osPknwzXEas&feature=sub
http://youtu.be/6dwqZw0j_jY
http://www.youtube.com/watch?v=6dwqZw0j_jY&feature=youtu.be    
http://www.youtube.com/watch?v=yZ-K7nCVnBI&playnext_from=TL&videos=osPknwzXEas&feature=sub
http://www.youtube.com/watch?v=peFZbP64dsU
http://youtube.com/v/dQw4w9WgXcQ?feature=youtube_gdata_player
http://youtube.com/watch?v=dQw4w9WgXcQ&feature=youtube_gdata_player
http://www.youtube.com/watch?v=dQw4w9WgXcQ&feature=youtube_gdata_player  
http://youtu.be/afa-5HQHiAs
http://youtu.be/dQw4w9WgXcQ?feature=youtube_gdata_player
http://www.youtube.com/watch?v=cKZDdG9FTKY&feature=channel
http://youtube.com/watch?vi=dQw4w9WgXcQ&feature=youtube_gdata_player
http://youtube.com/watch?feature=youtube_gdata_player&vi=dQw4w9WgXcQ
http://youtube.com/watch?feature=youtube_gdata_player&v=dQw4w9WgXcQ
https://youtube.com/shorts/TjBH4bJr7SM?feature=share

Regular Expressions 101

Regular Expression

Substitution