Re: regular expression and forbidden words

Nicolas Quirin wrote:

Hi, i'm french, i'm using regular expressions in php in order to rewrite hyperlink tags in a specific way before apache output is beeing sent to client. Purpose is to replace href attribute of any A html tag by a javascript function calling an ajax loader. Currently I have wrote that: $pattern = '/<a href="(http:\/\/dev.netdoor.fr|(\.))\/index.php\?page=(.*?)">(.*?)<\\/a>/i'; $replacement = '<a href="javascript:void(0);" OnClick="javascript:yui_fastLoader(\'./systeme/chargeur.php?page=$4\');">$5</a>'; $html_mark = preg_replace($pattern, $replacement, $html_mark); it works, but it's too permissive, it replaces too much links (some links with some get parameters must stay unchanged) I don't really understand my pattern...it's a little strange for me...lol I wouldn't like to rewrite links that contains any of the following words in get parameters (query string): noLoader noLeftCol skipallbutpage skipservice i would like to rewrite only link that begin with 'http://dev.netdoor.fr' or '.' examples: <a href="http://dev.netdoor.fr/index.php?page=./comptes/index.php&noLoader&noLeftCol&idx=6&bdx=423&skipservice">test</a> =>must be not rewritted! <a class="myclass" href="./index.php?page=./comptes/mediatheque/index.php&filter=mov;flv;mpeg&idx=7">name</a> =>must be rewritted like this : <a class="myclass" href="javascript:void(0);" OnClick="javascript:yui_fastLoader(\'./systeme/chargeur.php?page=./comptes/mediatheque/index.php&filter=mov;flv;mpeg&idx=7\');">name</a> Please help me...:0) best regards nicolas

The key here is (?!) - the negative assertion, it should look something like this: $p = '#<a href="(?:\.|http://dev.netdoor.fr)/index\.php\?page=(?![^"]*(?:noLoader|noLeftCol|skipallbutpage|skipservice))([^"]*)">(.*?)</a>#is'; $r = '<a href="javascript:void(0);" OnClick="javascript:yui_fastLoader(\'./systeme/chargeur.php?page=$1\');">$2</a>'; Arpad