DD.20150728.1710.CEST
$regexp(%DISCOGS_LINK%,'^(https?://)?(www\.)?([a-z0-9]+\.){1,}([a-z0-9]{2,})/?.*$','$3$4',1)
Beispiele ...
$regexp('http://DISCOGS.COM',
'^(https?://)?(www\.)?([a-z0-9]+\.){1,}([a-z0-9]{2,})/?.*$','$3$4',1)
==> DISCOGS.COM
$regexp('http://www.discogs.com/Pearl-Jam-Vitalogy/release/464904',
'^(https?://)?(www\.)?([a-z0-9]+\.){1,}([a-z0-9]{2,})/?.*$','$3$4',1)
==> discogs.com
$regexp('/t/17101/2',
'^(https?://)?(www\.)?([a-z0-9]+\.){1,}([a-z0-9]{2,})/?.*$','$3$4',1)
==> mp3tag.de
$regexp('http://www.4711.com/index.php/de/',
'^(https?://)?(www\.)?([a-z0-9]+\.){1,}([a-z0-9]{2,})/?.*$','$3$4',1)
==> 4711.com