substring - Making sure PHP substr finishes on a word not a character

Question

I know how to use the substr function but this will happy end a string halfway through a word. I want the string to end at the end of a word how would I go about doing this? Would it involve regular expression? Any help very much appreciated.

This is what I have so far. Just the SubStr...

echo substr("$body",0,260);

Cheers

Answer 1

substr($body, 0, strpos($body, ' ', 260))