php mysql order by timestamp is incorrect

Question

I have database records such as below

Name Date(timestamp) Time(timestamp)

I want to order them by time DESC. But it shows me incorrect order.

Answer 1

Are you sure that select only for the date that you want? Because I think that select multiple date not only one.

Also for what you want you need to use ASC instead of DESC.

Because I have try and it's work for me. This is my simple code :

$sql = "SELECT * FROM test WHERE date = '2016-02-10' ORDER BY time ASC";
$res = $DB->query($sql);

while($enr = $res->fetch()){
    var_dump($enr);
}

With this DB :

And the result is :

array (size=8)
  'id' => string '4' (length=1)
   0 => string '4' (length=1)
  'date' => string '2016-02-10' (length=10)
   1 => string '2016-02-10' (length=10)
  'time' => string '01:00:07' (length=8)
   2 => string '01:00:07' (length=8)

array (size=8)
  'id' => string '3' (length=1)
   0 => string '3' (length=1)
  'date' => string '2016-02-10' (length=10)
   1 => string '2016-02-10' (length=10)
  'time' => string '02:03:05' (length=8)
   2 => string '02:03:05' (length=8)

The result is order in the ASC order like you want

Hope that helps you.

Answer 2

Try to use Timestamp() for specifying that you expect the fields you wanna extract data from as timestamps.

something like this:

SELECT timestamp( `timestamp` ) as 'timestamp'
FROM randomTable
ORDER BY 1 ASC;

it would be great if you can post screenshots of your output to make the issue clearer.