Version: 1.1
Type: Function
Category: Calendars/Dates
License: GNU General Public License
Description: This function gets the age of a person from their date of birth in either the format DDMMYYYY or MMDDYYYY.
To call the function use getage(“25051983”) for DDMMYYYY or getage(“25051983”, “mdy”) for MMDDYYYY.
function getage($datestring, $dateformat){
if($dateformat=="mdy"){
$yearofbirth = substr($datestring, 4, 4);
$monthofbirth = substr($datestring, 0, 2);
$dayofbirth = substr($datestring, 2, 2);
} else {
$yearofbirth = substr($datestring, 4, 4);
$monthofbirth = substr($datestring, 2, 2);
$dayofbirth = substr($datestring, 0, 2);
}
$currentyear = date(Y);
$currentmonth = date(m);
$currentday = date(j);
if($monthofbirth>$currentmonth){
$age = ($currentyear - $yearofbirth)-1;
} else {
$age = ($currentyear - $yearofbirth);
}
if($monthofbirth==$currentmonth){
if($dayofbirth<=$currentday){
$age = ($currentyear - $yearofbirth);
} else {
$age = ($currentyear - $yearofbirth)-1;
}
}
return $age;
}
