Regular Expressions 101

<h3>the literal text <h3> (case sensitive)

Group 1(.+?)

.+?any Unicode character, repeated at least once

\<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

h3>the literal text h3> (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

<h4>the literal text <h4> (case sensitive)

Group 2(.+)

.+any Unicode character, repeated at least once

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

h4>the literal text h4> (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

<dl>the literal text <dl> (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

<dt>the literal text <dt> (case sensitive)

Group 3(.+)

.+any Unicode character, repeated at least once

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

dt>the literal text dt> (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

<dd>the literal text <dd> (case sensitive)

Group 4(.+)

.+any Unicode character, repeated at least once

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

dd>the literal text dd> (case sensitive)

Global pattern flags

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

u modifier: unicode. Treats the pattern and subject as UTF-16

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Search reference

Regular Expression

<h3>(.+?)\<\/h3>\s*<h4>(.+)<\/h4>\s*<dl>\s*<dt>(.+)<\/dt>\s*<dd>(.+)<\/dd>

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