Regular Expressions 101

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

url]https:the literal text url]https: (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

*+repeats the group contents below any number of times:

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)

watchthe literal text watch (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

v=the literal text v= (case insensitive)

Group 1([\w\-]+)

Character Class[\w\-]+

+matches at least one character from the set below:

\wany word character

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

urlthe literal text url (case insensitive)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Global pattern flags

U modifier: Ungreedy. Quantifiers are lazy by default. A trailing ? makes a quantifier greedy

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\[url]https:\/\/(?:www\.)*+youtube\.com\/watch\?v=([\w\-]+)\[\/url\]

New

[url]https://www.youtube.com/watch?v=hXxQhbmjE7o[/url]

[media=youtube]\1[/media]