Regular Expressions 101

Pro

<codethe literal text <code (case insensitive)

Non-Capturing Group(?:\s+type=(?:"([^"]+)"|\'([^\']+)|(\w+)))?

?repeats the group contents below at most once:

\s+any whitespace character, repeated at least once

type=the literal text type= (case insensitive)

Non-Capturing Group(?:"([^"]+)"|\'([^\']+)|(\w+))

1st Alternative"([^"]+)"

"the literal " (34₁₀ / 42₈ / 22₁₆)

Group 1([^"]+)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

2nd Alternative\'([^\']+)

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2([^\']+)

Negated Character Class[^\']+

+matches at least one character outside the set below:

\'the literal ' (39₁₀ / 47₈ / 27₁₆)

3rd Alternative(\w+)

Group 3(\w+)

\w+any word character, repeated at least once

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Group 4(.*?)

.*?any character, repeated any number of times

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

code>the literal text code> (case insensitive)

Global pattern flags

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

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

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

<code(?:\s+type=(?:"([^"]+)"|\'([^\']+)|(\w+)))?>(.*?)<\/code>

New

Hallo das sind Code Tags: <code>das ist ein code tag</code> oder das <code type="php">echo "Hallo Welt!";</code> oder <code type=html> <h1>Willkommen!</h1> </code>. Danke.