overwrite existing data based on returned values - mysql

Question

Trying to overwrite existing data based on returned values, just want to get 'location' to update to the new info coming from a CSV import. Have a duplicated table with Oldlocation (all set to DW for testing, so any changes can be seen) Seems like it should be simple....:
$file = "allinv.CSV";
if(($handle = fopen($file, "r")) !== FALSE)
{ fgetcsv($handle);
while (($data = fgetcsv($handle, 1000, ",")) !== FALSE){
$num = count($data);
for ($c=0; $c < $num; $c++) {
$col[$c] = $data[$c];}
$col1 = $col[1];
$sql = "SELECT Oldlocation FROM invbkup WHERE VIN = '$col1'"; ///works fine, gets old location for each record
$result = mysqli_query($con, $sql);
$row = mysqli_fetch_array($result);
$whl= $row['Oldlocation'];
$col8 = $col[73];
$query = "UPDATE allinv SET location = '$col8' WHERE $whl = 'DW' ";
echo $col1, $col8, $whl, "</br>";////can see all the info but get no changes in database.
$a= mysqli_query($con, $query);
}
fclose($handle);
}

Answer 1

Nevermind, it was a simple problem I fix by putting it in an if statement:
if($whl = 'DW'){
$query = "UPDATE allinv SET location = '$col8' WHERE VIN ='$col1'";
$a= mysqli_query($con, $query);}
sometimes you over complicate the problem yourself, take a break, drink some coffee and try not thinking so hard.