function getAlter($datum)

{

    $akt_jahr = date("Y");

    $akt_monat = date("m");

    $akt_tag = date("d");



    $gebdat = explode("-", $datum);



    $geb_jahr = $gebdat[0];

    $geb_monat = $gebdat[1];

    $geb_tag = $gebdat[2];



    $alter = $akt_jahr - $geb_jahr;

    $v = $akt_monat - $geb_monat;



    // Geb-Monat in der Zukunft

    if ($v < 0) {

    $alter = $alter - 1;



    // aktuelles Monat ist Geb-Monat

    } elseif ($v == 0) {

    $d = $akt_tag - $geb_tag;

    if ($d < 0) { $alter = $alter - 1; }

    }



    // Rückgabe des Alters

    return $alter;

}

echo getAlter($user_data['user_birthdate']);

<?php

/*-------------------------------------------------------+

| PHP-Fusion Content Management System

| Copyright © 2002 - 2008 Nick Jones

| http://www.php-fusion.co.uk/

+--------------------------------------------------------+

| Birthdate Panel for PHP-Fusion v7

| Author: Ralf Thieme

| Homepage: www.PHPFusion-SupportClub.de

+--------------------------------------------------------+

| This program is released as free software under the

| Affero GPL license. You can redistribute it and/or

| modify it under the terms of this license which you

| can read by viewing the included agpl.txt or online

| at www.gnu.org/licenses/agpl.html. Removal of this

| copyright header is strictly prohibited without

| written permission from the original author(s).

+--------------------------------------------------------*/

if (!defined("IN_FUSION")) { die("Access Denied"); }



if (!function_exists("ALTER")) {

   function ALTER($gebd,$gebm,$geby){

      $alter = date("Y") - $geby;

      if (mktime(0,0,0,date("m"),date("d"),date("Y")) < mktime(0,0,0,$gebm,$gebd,date("Y"))) {

         $alter--;

      }

      return $alter;

   }

}



function getAlter($datum)

{

    $akt_jahr = date("Y");

    $akt_monat = date("m");

    $akt_tag = date("d");



    $gebdat = explode("-", $datum);



    $geb_jahr = $gebdat[0];

    $geb_monat = $gebdat[1];

    $geb_tag = $gebdat[2];



    $alter = $akt_jahr - $geb_jahr;

    $v = $akt_monat - $geb_monat;



    // Geb-Monat in der Zukunft

    if ($v < 0) {

    $alter = $alter - 1;



    // aktuelles Monat ist Geb-Monat

    } elseif ($v == 0) {

    $d = $akt_tag - $geb_tag;

    if ($d < 0) { $alter = $alter - 1; }

    }



    // Rückgabe des Alters

    return $alter;

}



if (file_exists(INFUSIONS."birthdate_panel/locale/".LOCALESET."index.php")) {

   include INFUSIONS."birthdate_panel/locale/".LOCALESET."index.php";

} else {

   include INFUSIONS."birthdate_panel/locale/German/index.php";

}



$months = explode("|", $locale['months']);

$month = $months[number_format(date("m"))];



$result = dbquery("SELECT * FROM ".DB_USERS." WHERE user_birthdate like '____-".date("m")."-__' ORDER BY DAYOFMONTH(user_birthdate) ASC");

openside($locale['pfsc_gb1'].$month);

if (dbrows($result)) {

   while($data = dbarray($result)) {

      if (array_key_exists("user_birthdate", $data) && $data['user_birthdate'] != "0000-00-00") {

         $user_birthdate = explode("-", $data['user_birthdate']);

         if ($user_birthdate[2] == date("d")) {

            echo "<img src='".INFUSIONS."birthdate_panel/birthday.gif' alt='bd' />&nbsp;\n";

         }

         echo $user_birthdate[2].".".$user_birthdate[1]."&nbsp;";

         echo "<a href='".BASEDIR."profile.php?lookup=".$data['user_id']."'>".trimlink($data['user_name'], 15)."</a>";

//         echo "&nbsp;(".ALTER(number_format($user_birthdate['2']),number_format($user_birthdate['1']),$user_birthdate['0']).")";

                        echo "&nbsp;(".getAlter($data['user_birthdate']).")";

         echo "<br />\n";

      }

   }

} else {

   echo $locale['pfsc_gb2'].$month;

}

closeside();

?>