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function to add HTML tags to text

Posted by ontheplains (ontheplains), 7 May 2007
hey guys, so here is what i'm trying to do.  i have 4 fields (noun1, noun2, noun3, verb1) for a person to fill out and what they put into these fields will be printed out at certain points throughout a quotation (basically, it's a madlib with quotes from the simpsons and futurama).  after the four fields, i allow them to select from a drop-down select menu with the options of bold, underlined, italics.  what i need done is that IF they select any of those, i need what is printed out from the fields to be printed out with HTML tag formats (<b><u><i>).

if you need more info, just let me know.  any help would be very appreciated.

Posted by admin (Graham Ellis), 8 May 2007
You can make the additions to your contribution text area using Javascript - a good way to find an example is to view source from this very page that I'm writing on (and you made the original post on).  Javascript is NOT my strong point, so I'll stop there on that advise and let the page / source talk.

The uploaded text will include BBC markups and NOT HTML tags - that's good because you only want your users to have a restricted set of things they can do - and you'll translate them into tags using preg_replace when you redisplay the text later.

Here is the code we use (on our wiki) to deal with bold and underline.

$taggled = preg_replace("/\[([bu])\]/",''<\1>'',$taggled);
$taggled = preg_replace("!\[/([bu])\]!",''</\1>'',$taggled);

Hope this gets you started ... let me know if you ned more guidance.

P.S.  Remember to "htmlspecialchars" your user's input to avoid injection attacks on your server / attempts to generate corrupt pages from your site.

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