Regular Expressions 101

<span class='pages'>the literal text <span class='pages'> (case sensitive)

Group 1((?:[^<>]*|(?=|<((?!span\b)[^> ]+)[^>]*>.*?</\2>)*)

Non-Capturing Group(?:[^<>]*|(?=|<((?!span\b)[^> ]+)[^>]*>.*?</\2>)*

*repeats the group contents below any number of times:

1st Alternative[^<>]*

Negated Character Class[^<>]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative(?=

Positive Lookahead(?=<!--)

<!--the literal text <!--

.*?any character (except for line terminators), repeated any number of times

-->the literal text -->

3rd Alternative<((?!span\b)[^> ]+)[^>]*>.*?</\2>

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 2((?!span\b)[^> ]+)

Negative Lookahead(?!span\b)

spanthe literal text span (case sensitive)

\ban ASCII word boundary

Negated Character Class[^> ]+

+matches at least one character outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Negated Character Class[^>]*

*matches any number of characters outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

.*?any character (except for line terminators), repeated any number of times

</the literal text </

\2the text saved by group 2

>the literal > (62₁₀ / 76₈ / 3E₁₆)

</span>the literal text </span> (case sensitive)

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

<span class='pages'>((?:[^<>]*|(?=<!--).*?-->|<((?!span\b)[^> ]+)[^>]*>.*?</\2>)*)</span>

New

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