[Resolved] preg_replace certain html entities

buraks78

due to xhtml restrictions, i have to remove all html entities that are not &amp; &gt; &lt; &quot;,etc.. decimal entities (&#123; etc) are not the problem, btw.

tried this code

preg_replace('/&((?!amp)|(?!gt)|(?!lt)|(?!quot));/i','',$i);

but it fails..

also tried preg_replace_callback but it fails since the function that replaces the text is a class method.

and last of all, no luck with the /e flag to execute mulitple lines of php code..

please help..

xblue

I think you are on the right track with lookaheads (though 1 lookahead should be enough), but as far as I can see your pattern is requiring the semicolon to directly follow the ampersand, which doesn't seem to be what you want. try

/&(?!(amp|gt|lt|quot))[a-z]+;/i'

buraks78

yep... that worked perfectly.. thank you very much.