Php вызов функции

Имеется код. Ошибка в вызове функции. Только не могу понять где.

<?php
include("bd.php");
$odin = 1;
$a1 = mysql_query("SELECT data FROM comment WHERE id='$odin' ");
$a2 = mysql_fetch_array($a1);
$time1 = $a2["data"];
 $time = time($time1);
echo $time;
echo "Ende";
function timeAgo($time){
    $datetime1=new DateTime("now");
    $datetime2=date_create($time);
    $diff=date_diff($datetime1, $datetime2);
    $timemsg='';
    if($diff->y > 0){
        $timemsg = $diff->y .' year'. ($diff->y > 1?"'s":'');
    }
    else if($diff->m > 0){
     $timemsg = $diff->m . ' month'. ($diff->m > 1?"'s":'');
    }
    else if($diff->d > 0){
     $timemsg = $diff->d .' day'. ($diff->d > 1?"'s":'');
    }
    else if($diff->h > 0){
     $timemsg = $diff->h .' hour'.($diff->h > 1 ? "'s":'');
    }
    else if($diff->i > 0){
     $timemsg = $diff->i .' minute'. ($diff->i > 1?"'s":'');
    }
    else if($diff->s > 0){
     $timemsg = $diff->s .' second'. ($diff->s > 1?"'s":'');
    }
$timemsg = $timemsg.' ago';
return $timemsg;
}
echo(timeAgo($time));
?>