why not use substr?
$preview = substr($string, 0, 50) .'...';
it will probably cut off in the middle of a word, but you can use strpos
and
check to see if the char is a space to get to the point you want.
It's possible that the keywords wouldn't be in the first X numbers of
characters.
Then use strstr() to find the first occurence of the first keyword and
then use substr with an initial offset...
-philip
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