Okay, I don't know if this has been solved yet, but.. you need to do this in your echo tag:
PHP Code:
echo "
posted at-by ".$r[date]." by <A HREF='mailto:".$r[city]."'>
".$r[author]."
$r[mesgg];
If you are trying to display an array variable, you need to get it out of the quotes of echo first, thus doing ".$variable[xxx]."