regex101: PCRE (Legacy) Substitution Workspace

1st Alternative<(?:(?:img)(?=[\s>\/])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>|(a|span|pre|code|strong|b|em|i)(?=[\s>\\])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>.*?<\/\1>)

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Non-Capturing Group(?:(?:img)(?=[\s>\/])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>|(a|span|pre|code|strong|b|em|i)(?=[\s>\\])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>.*?<\/\1>)

1st Alternative(?:img)(?=[\s>\/])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>

Non-Capturing Group(?:img)

imgthe literal text img (case insensitive)

Positive Lookahead(?=[\s>\/])

Character Class[\s>\/]

\sany whitespace character

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*

*repeats the group contents below any number of times:

1st Alternative[^>=]

Negated Character Class[^>=]

>the literal > (62₁₀ / 76₈ / 3E₁₆)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

2nd Alternative=(?:'[^']*'|"[^"]*"|[^'"\s>]*)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

Non-Capturing Group(?:'[^']*'|"[^"]*"|[^'"\s>]*)

1st Alternative'[^']*'

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negated Character Class[^']*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

2nd Alternative"[^"]*"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negated Character Class[^"]*

*matches any number of characters outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

3rd Alternative[^'"\s>]*

Negated Character Class[^'"\s>]*

*matches any number of characters outside the set below:

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

\sany whitespace character

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\s?optionally matches any whitespace character

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative(a|span|pre|code|strong|b|em|i)(?=[\s>\\])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>.*?<\/\1>

Group 1(a|span|pre|code|strong|b|em|i)

1st Alternativea

athe literal a (97₁₀ / 141₈ / 61₁₆) (case insensitive)

2nd Alternativespan

spanthe literal text span (case insensitive)

3rd Alternativepre

prethe literal text pre (case insensitive)

4th Alternativecode

codethe literal text code (case insensitive)

5th Alternativestrong

strongthe literal text strong (case insensitive)

6th Alternativeb

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case insensitive)

7th Alternativeem

8th Alternativei

Positive Lookahead(?=[\s>\\])

Non-Capturing Group(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*

\s?optionally matches any whitespace character

\/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.*?any character, repeated any number of times

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative(?:"[^"]*"|[^"<]*)*

Global pattern flags

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

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

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

25 tokens

Regular Expression

<(?:(?:img)(?=[\s>\/])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>|(a|span|pre|code|strong|b|em|i)(?=[\s>\\])(?:[^>=]|=(?:'[^']*'|"[^"]*"|[^'"\s>]*))*\s?\/?>.*?<\/\1>)|(?:"[^"]*"|[^"<]*)*

Unit Tests

There are no unit tests, click to add some.