Regular Expressions 101

Pro

Group 1(^|[^<>])

1st Alternative^

^start of string

2nd Alternative[^<>]

Negated Character Class[^<>]

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\ban ASCII word boundary

Group 2((?:https?|ftp):\/\/[^<>\s]+\b)

Non-Capturing Group(?:https?|ftp)

1st Alternativehttps?

httpthe literal text http (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

2nd Alternativeftp

ftpthe literal text ftp (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negated Character Class[^<>\s]+

+matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\sany whitespace character

\ban ASCII word boundary

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

26 tokens

(^|[^<>])\b((?:https?|ftp):\/\/[^<>\s]+\b)

New

http://www.google.com here and https://google.com  ftp://google.com 
<http://www.google.com> here and <https://google.com> <ftp://google.com>

$1<a href="$2">$2</a>

http://www.google.com here and https://google.com  ftp://google.com 
<http://www.google.com> here and <https://google.com> <ftp://google.com>