Regular Expressions 101

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 1([^<\/>]*)

Negated Character Class[^<\/>]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 2([^<\/>]*)

Negated Character Class[^<\/>]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 3([\s]*?|(?R))

1st Alternative[\s]*?

Character Class[\s]*?

*?matches any number of characters from the set below:

\sany whitespace character

2nd Alternative(?R)

(?R)recurses into the entire pattern

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\1the text saved by group 1

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Global pattern flags

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

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

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

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

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Search reference

Regular Expression

<([^<\/>]*)([^<\/>]*)>([\s]*?|(?R))<\/\1>

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