[Help!] After so many character end in '...'

[Notoriouswow]

Hello phpfreaks, I have a self coded forums (Yes, it is mine, it is not 3rd party)

 

Would like to know how I would make it so that after a certain amount of characters a topic would stop and end in '...' without the quotes obviously.

 

If you need the code, just ask.

 

Thanks in Advance,

NotoriousWoW

[Mchl]

$maxLen = 85;
if(strlen($topic) > $maxLen) {
  $topic = substr($topic,0,$maxLen-3).'...';
}

echo $topic