Datediff di codeigniter ??

$tgl1 = "2011-02-07";
$tgl2 = "2013-04-10";
$datediff = abs(strtotime($tgl2)-strtotime($tgl1));
$tahun = floor($datediff/(365*60*60*24));
$bulan = floor(($datediff-$tahun*365*60*60*24)/(30*60*60*24));
$hari = floor(($datediff-$tahun*365*60*60*24-$bulan*30*60*60*24)/(60*60*24));
 
echo "Tanggal 1 : ".$tgl1."<br/>";
echo "Tanggal 2 : ".$tgl2."<br/>";
echo "Beda tanggal : ".$tahun." tahun, ".$bulan." bulan, ".$hari." hari";