This bit of code

function age($date){    

$year_diff = '';    

$time = strtotime($date);      

if(FALSE === $time){

         return '';    

}

$date = date('Y-m-d', $time);    

list($year,$month,$day) = explode("-",$date);    

$year_diff = date("Y") – $year;    

$month_diff = date("m") – $month;    

$day_diff = date("d") – $day;    

if ($day_diff < 0 || $month_diff < 0) $year_diff–;      

return $year_diff;

}

worked OK but now my server log states an error in the line

$year_diff = date("Y") – $year;    

and dreamweaver flags that line and the following two lines as errors. Can anyone see why?