regex101: PCRE (Legacy) Match Workspace

Non-Capturing Group(?:http(?:s)?:\/\/)?

?repeats the group contents below at most once:

httpthe literal text http (case insensitive)

Non-Capturing Group(?:s)?

?repeats the group contents below at most once:

sthe literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

?repeats the group contents below at most once:

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

1st Alternativeyoutu\.be\/

yoututhe literal text youtu (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

bethe literal text be (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternativeyoutube\.com\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/)

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)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/)

1st Alternative(?:watch)?\?(?:.*&)?v(?:i)?=

Non-Capturing Group(?:watch)?

?repeats the group contents below at most once:

watchthe literal text watch (case insensitive)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

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

?repeats the group contents below at most once:

.*any character (except for line terminators), repeated any number of times

&the literal & (38₁₀ / 46₈ / 26₁₆)

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

Non-Capturing Group(?:i)?

?repeats the group contents below at most once:

ithe literal i (105₁₀ / 151₈ / 69₁₆) (case insensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

2nd Alternative(?:embed|v|vi|user)\/

Non-Capturing Group(?:embed|v|vi|user)

1st Alternativeembed

embedthe literal text embed (case insensitive)

2nd Alternativev

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

3rd Alternativevi

vithe literal text vi (case insensitive)

4th Alternativeuser

userthe literal text user (case insensitive)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 1([^\?&\"'<> #]+)

Negated Character Class[^\?&\"'<> #]+

+matches at least one character outside the set below:

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

&the literal & (38₁₀ / 46₈ / 26₁₆)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

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

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

Search reference

Regular Expression

(?:http(?:s)?:\/\/)?(?:www\.)?(?:youtu\.be\/|youtube\.com\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/))([^\?&\"'<> #]+)

New

<p>asdad youtube
</p><div><br />
youtube: https://www.youtube.com/watch?v=HAKp1hyeaFU 

</div>
<div>daadsads</div>

<div>https://www.youtube.com/embed/HAKp1hyeaFU</div>

<div>https://www.youtube.com/embed/HAKp1hyeaFU</div>

<div>https://www.youtube.com/embed/HAKp1hyeaFU</div>


<div>https://youtu.be/j2uN5Jeblf4</div>

Regular Expressions 101

Regular Expression

Extraction