[PHP] Split a string on a space, not in side an HTML tag.

[Stuart Gilbert]

Hi, I'm trying to get a 500 character split of a string, I only want 
about the fist 500 characters, I would like to split on a space, which I 
have managed to do so far, but I would also like the split to not take 
place inside an HTML tag, so that I don't end up with weird looking pages.

I was trying to use strip_tags() error checking to tell me whether I my 
string was valid html or not. If it's not valid html then I would like 
to split before that part of the html begins. Possibly even as simply as 
removing the last 10 characters (to the nearest space) until I get valid 
HTML.

Can anyone help me get a way to split my text at around the 500 
character mark without breaking any HTML which may be inside the string 
I am displaying on the page?

Also, if you're interested in the strip_tags() problem I was speaking 
about then take a look at: http://better.domain.name/php/strip.php there 
is a link to the source on the page.

Regards,
        Stuart Gilbert.
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