Posted by Alan Little on 12/18/01 11:49

Carved in mystic runes upon the very living rock, the last words of
greatprovider of comp.lang.php make plain:

> i'm starting with a string such as "Na**3C**6H**5O**7*2H**20"
>
> im attempting to match all **\d+ ...once i can match all the double
> asterix \d i intend to wrap the \d in "<sub>" tags for display
> purposes.
>
> i have been trying to write the correct pattern for 2 weeks now without
> any success...i can get preg_replace() to work, with several simple
> patterns but when i use preg_match_all, i either get unintended results
> or incomplete matches.

The expression you have works fine for me. You'll have to give more
information about what's happening. "It doesn't work" isn't much to go
on.

--
Alan Little
Phorm PHP Form Processor
http://www.phorm.com/

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