// url catch only (not all wiki syntax)
$clog = preg_replace(array(
'/((?:https?|ftp):\/\/(?:\.*,*[\w@~%$£µ&i#\-+=_\/\?;])*)/ui',
// url catch only (not all wiki syntax)
$clog = preg_replace(array(
'/((?:https?|ftp):\/\/(?:\.*,*[\w@~%$£µ&i#\-+=_\/\?;])*)/ui',