Regular Expressions 101

Group 1(http|https|ftp)

1st Alternativehttp

httpthe literal text http (case insensitive)

2nd Alternativehttps

httpsthe literal text https (case insensitive)

3rd Alternativeftp

ftpthe literal text ftp (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 2(\S*)

\S*any non-whitespace character, repeated any number of times

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(http|https|ftp):\/\/(\S*)

New

hi https://fillter.me/?asdf=23 hi  hi https://fillter.me2/ hi

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