note 46739 added to function.preg-replace

I needed to treat exclusively long urls and not shorter ones for which my client prefered to have their complete addresses displayed. Here's the function I end up with: <?php function auto_url($txt){ # (1) catch those with url larger than 71 characters $txt = preg_replace("/(http|ftp)+(?:s)?:(\\/\\/)((\\w|\\.)+)(\\/)? (\\S){71,}/i", "<a href=\"\\0\" target=\"_blank\">$1$2$3/...</a>", $txt ); # (2) replace the other short urls provided that they are not contained inside an html tag already. $txt = preg_replace( "/(?<!href=\")(http|ftp)+(s)?:(\\/\\/)((\\w|\\.)+) (\\/)?(\\S)/i","<a href=\"$0\" target=\"_blank\">$0</a> ", $txt ); return $txt; } ?> Note the negative look behind expression added in the second instance for exempting those that are preceded with ' href=" ' (meaning that they were already put inside appropiate html tags by the previous expression) (get rid of the space between question mark and the last parenthesis group in both regex, I need to put it like that to be able to post this comment) ---- Manual Page -- http://www.php.net/manual/en/function.preg-replace.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+46739 Delete -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+46739&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+46739&report=yes Search -- http://master.php.net/manage/user-notes.php