Calculate age

With this function you can calculate the age of a person Example: echo "Age is: " . birthday ("1984-07-05"); Result will be (23 Feb 2012) = "Age is: 27"


function birthday ($birthday){
    list($year,$month,$day) = explode("-",$birthday);
    $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;
}