note 52599 added to function.preg-match-all

Since it's nowhere documented, I'd like to take a first step in the use of the vertical bar in the first example in "|<[^>]+>(.*)</[^>]+>|U". The vertical bars are used to separate the U modifier from the expression. I would like to learn some more on this subject but can't find it anywhere. ---- Manual Page -- http://www.php.net/manual/en/function.preg-match-all.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+52599 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+52599&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+52599&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+52599&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+52599&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+52599&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+52599&report=yes Search -- http://master.php.net/manage/user-notes.php