Is there a way to hidden latitude and longitude using php?

I have a database that contains latitudes and longitudes for over 3000 locations. In my table, latitude and longitude looks like this:

Latitude: 26 ° 56.34308 '
Longitude: -094 ° 41.32328'

I need these numbers to be converted to decimal minutes and without - and 'in the number. The reason for this is to calculate the distance to another location.

Is there a way to do this using php?

This is what I have so far and I need help putting it all together.

    ///// Get the two locations from the url

$lat1 = $_GET[lat1];
$lon1 = $_GET[lon1];

////// lat2 & Lon2 are the ones that need to be converted

$lat2 = $_GET[lat2];
$lon2 = $_GET[lon2];

///// Convert lat2 & lon2 into decimal format

$pos1 = strrpos($mystring, "°");
$pos2 = strrpos($mystring, ".");
$pos3 = strrpos($mystring, "'");
// Get subsring from a string: substr(source, start, length)
$deg = substr($mystring, 0, $pos1);
$min = substr($mystring, $pos1, $pos2 - $pos1);
$sec = substr($mystring, $pos2, $pos3 - $pos2);

function DMStoDEC($deg,$min,$sec) {
// Converts DMS ( Degrees / minutes / seconds )
// to decimal format longitude / latitude
    return $deg+((($min*60)+($sec))/3600);
}

//////calculate the distance

function distance($lat1, $lon1, $lat2, $lon2, $unit) {
    $theta = $lon1 - $lon2;
    $dist = sin(deg2rad($lat1)) * sin(deg2rad($lat2)) +
        cos(deg2rad($lat1)) * cos(deg2rad($lat2)) * cos(deg2rad($theta));
    $dist = acos($dist);
    $dist = rad2deg($dist);
    $miles = $dist * 60 * 1.1515;
    $unit = strtoupper($unit);

    if ($unit == "K") {
        return ($miles * 1.609344);
    } else if ($unit == "N") {
        return ($miles * 0.8684);
    } else {
        return $miles;
    }
}

// Miles
echo distance($lat1, $lon1, $lat2, $lon2, "m") . " miles<br><br>";

//Kilometers
echo distance($lat1, $lon1, $lat2, $lon2, "k") . " kilometers<br><br>";

//Nautical miles
echo distance($lat1, $lon1, $lat2, $lon2, "N") . " Nautical miles";