Sorting time array giving wrong values in PHP

I have a php array like
this:-

array(3) {

            [0]=>
 string(4) "9:30"
 [1]=>
 string(5)
            "15:00"
 [2]=>
 string(5)
            "13:00"
}

After sorting
this time i am getting wrong data. i am sorting it by
array_multisort function.

This is
what i am getting after time is
sorted

array(3) {

            [0]=>
 string(5) "03:00"
 [1]=>
 string(5)
            "01:00"
 [2]=>
 string(5) "09:30"

            }

This is my
code

first i am converting my time to unix time by using
strtotime function then sorting like
this:

while($row11 =
            mysqli_fetch_array($hourget))
 {
 $totlahourdat1[] =
            strtotime($row11['hours']);
 $totlahourdat2[] = $row11['hours'];

            }
 echo "
";
 var_dump($totlahourdat2);
 echo
            "
";
 //sort data
 array_multisort($totlahourdat1,
            SORT_DESC);
 //var_dump($totlahourdat);
 foreach($totlahourdat1 as
            $time){
 $totlahourdat[] = date("h:i",$time);
 }
 echo
            "
";
 var_dump($totlahourdat);
echo
            "
";

if i print my
$totlahourdat1 array then i get
this:

array(3) {

            [0]=>
 int(1500535800)
 [1]=>

            int(1500555600)
 [2]=>
 int(1500548400)

            }

My result should be
like:

array(3) {

            [0]=>
 string(4) "9:30"
 [1]=>
 string(5)
            "13:00"
 [2]=>
 string(5)
            "15:00"
}

Any help will
be highly appreciated.