regex101: PCRE (Legacy) Match Workspace

1st Alternativewww\.mywebsite\.com(*SKIP)(*FAIL)

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

mywebsitethe literal text mywebsite (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case insensitive)

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*FAIL)forces the current match attempt to fail at this position

2nd Alternative(?:https?|ftp)://

Non-Capturing Group(?:https?|ftp)

1st Alternativehttps?

httpthe literal text http (case insensitive)

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

2nd Alternativeftp

ftpthe literal text ftp (case insensitive)

://the literal text ://

3rd Alternative(?:[a-z0-9]+\.)?[a-z0-9]+\.[a-z]{2,4}

Non-Capturing Group(?:[a-z0-9]+\.)?

?repeats the group contents below at most once:

Character Class[a-z0-9]+

+matches at least one character from the set below:

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

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-z0-9]+

+matches at least one character from the set below:

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

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[a-z]{2,4}

{2,4}matches between 2 and 4 characters from the set below:

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

4th Alternative\?[a-z0-9]+[&=#a-z]+

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Character Class[a-z0-9]+

+matches at least one character from the set below:

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

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

Character Class[&=#a-z]+

+matches at least one character from the set below:

&the literal & (38₁₀ / 46₈ / 26₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

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

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

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

Search reference

Regular Expression

www\.mywebsite\.com(*SKIP)(*FAIL)|(?:https?|ftp)://|(?:[a-z0-9]+\.)?[a-z0-9]+\.[a-z]{2,4}|\?[a-z0-9]+[&=#a-z]+

Test String
New

$url = 'This is url for example to remove www.somewbsite.com but i want to skip removeing this url www.mywebsite.com';

Regular Expressions 101

Regular Expression

Test String
New

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Regular Expression

Test StringNew

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Test String
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