How to invoke data_array into a foreach loop that deal with database

Problem: How can I invoke array into a foreach loop where I invoke array from database?

Currenctly I have an array:

Array
(
    [0] => Array
        (
            [time] => 2016-07-01 19:00:00
            [name_station] => RC Bilogora
            [longitude] => 17.162
            [latitude] => 45.882
            [type_station] => 0
            [temperature] => 28.8
            [humidity] => 62
            [pressure] => 1015.7
            [pressure_tendency] => -0.5
            [wind_direction] => SW
            [wind_velocity] => 1.6
            [precipitation] => preteĹľno vedro
            [icon] => 2
        )

    [1] => Array
        (
            [time] => 2016-07-01 19:00:00
            [name_station] => Bjelovar
            [longitude] => 16.869
            [latitude] => 45.910
            [type_station] => 1
            [temperature] => 28.6
            [humidity] => 54
            [pressure] => 1015.8
            [pressure_tendency] => -0.5
            [wind_direction] => NW
            [wind_velocity] => 1.4
            [precipitation] => lahor
            [icon] => -
        )

    [2] => Array
        (
            [time] => 2016-07-01 19:00:00
            [name_station] => Crikvenica
            [longitude] => 14.689
            [latitude] => 45.173
            [type_station] => 1
            [temperature] => 28.0
            [humidity] => 62
            [pressure] => 1015.8
            [pressure_tendency] => -0.9
            [wind_direction] => E
            [wind_velocity] => 1.8
            [precipitation] => povjetarac
            [icon] => -
        )
...

It is stored under $xml_data_array;

From that data I need to get $station_name and $time and compare it to a database values $station_name_db and $time_db.

This part of code that communicates with database:

   try {
                $sql_vwstationmeasurment_select = "SELECT * FROM vwstationmeasurment";
                $stmt_vwstationmeasurment_select = $dbh->prepare($sql_vwstationmeasurment_select);
                $stmt_vwstationmeasurment_select->execute();
                $result_vwstationmeasurment_select = $stmt_vwstationmeasurment_select->fetchAll(PDO::FETCH_ASSOC);

                $result_vwstationmeasurment_select_array = array ();
                foreach($result_vwstationmeasurment_select as $row) {
                        $station_name_db = $row['station_name'];
                        $time_db = $row['time'];

                        if ($station_name_db != $station_name OR empty($station_name_db)){
                            // do something
                        } elseif($time_db != $time){
                            // do something
                        }
                                $result_vwstationmeasurment_select_array[] =($row);
                }

                // save transaction
                $dbh->commit();

                                // close database connection
                $dbh = null;

       } catch (PDOException $e) {
                // cancel the transaciton if something went wrong and write msg about it
                $dbh->rollBack();
                print "Error!: " . $e->getMessage() . "<br/>";
                die();
       }

I dont know how to invoke data from $xml_data_array ($station_name and $time) into it? I would appriciate any kind of help.