regex101: PCRE (Legacy) Match Workspace

^start of line

Group 1((https|http):\/\/)?

?repeats the group contents below at most once:

Group 2(https|http)

1st Alternativehttps

httpsthe literal text https (case sensitive)

2nd Alternativehttp

httpthe literal text http (case sensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(www\.)?

?repeats the group contents below at most once:

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 4([\w-]{2,}\.[\w-]{2,3}\.[\w-]{2,3}|[\w-]{2,}\.[a-zA-Z]{2,3})

1st Alternative[\w-]{2,}\.[\w-]{2,3}\.[\w-]{2,3}

Character Class[\w-]{2,}

{2,}matches at least 2 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]{2,3}

{2,3}matches between 2 and 3 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w-]{2,3}

{2,3}matches between 2 and 3 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative[\w-]{2,}\.[a-zA-Z]{2,3}

Character Class[\w-]{2,}

{2,}matches at least 2 characters from the set below:

\wany word character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-zA-Z]{2,3}

{2,3}matches between 2 and 3 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)

Group 5(\/[a-z0-9]+(\.(php|html|asp|aspx))?)?

?repeats the group contents below at most once:

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Character Class[a-z0-9]+

+matches at least one character from the set below:

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

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

Group 6(\.(php|html|asp|aspx))?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Group 7(php|html|asp|aspx)

1st Alternativephp

phpthe literal text php (case sensitive)

2nd Alternativehtml

htmlthe literal text html (case sensitive)

3rd Alternativeasp

aspthe literal text asp (case sensitive)

4th Alternativeaspx

aspxthe literal text aspx (case sensitive)

$end of line

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

Search reference

Regular Expression

^((https|http):\/\/)?(www\.)?([\w-]{2,}\.[\w-]{2,3}\.[\w-]{2,3}|[\w-]{2,}\.[a-zA-Z]{2,3})(\/[a-z0-9]+(\.(php|html|asp|aspx))?)?$

New

https://www.page.com/about.php
https://www.page.com/about 
https://www.page.com/  
www.page.com
page.com
page-10.com
1234.com
www.page
1234567._-d

Regular Expressions 101

Regular Expression

Extraction