/**
 * 根据生日计算年龄
 *
 * @param 
 * @author 编程之家 jb51.cc jb51.cc
 **/
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; 
}


/***   来自编程之家 jb51.cc（jb51.cc）   ***/