[Logician]

yep possible..

Edit newreply.php find:

PHP Code:

  // check for subject and message
  $message=trim($message);
  if ($message=="") {
    eval("standarderror(\"".gettemplate("error_nosubject")."\");");
    exit;
  } 


After that add:

PHP Code:

  
  if (strlen(trim($message))<X) {
    eval("standarderror(\"".gettemplate("too_short")."\");");
    exit;
  } 


Replace X with the min. char number you want and create a new template named "too_short" via Admin CP. This hack applies only to new replies. Not likely but if you have a problem with newthreads too, apply the same code to new.thread.php

A few points:
* Remember: smiley text or bbcode count as chars too.
* This wont stop your users to pass it with a text like:
"yes.............................................. ....................."

Another hack I use in my board is to check vowel count. If the message does not have a vowel or enough vovel I dont let it pass, since it's either a meaningless text like "ghgjhgkjg" or a very short answer like "no" or ": )"

Enjoy..
Logician