Change while loop with foreach

[everton.retweets]

Hi Everyone...

I have been digging around the web for the last two days trying to fix this problem myself, but have come to the realization that I need some help.

I have a mysql query that selects all country names from my country db, (works as described)
I then have a select dropdown that is populated from the above query.
Here is the mysql select.

$result_country = $Db->query('select Country from countries order by Country Desc ');

Here is the select dropdown.

    <select name="country" tabindex="2" class="span3" value='<?php echo $country; ?>' id="country" data-placement="right" rel="tooltip" title="Select your Country..">
                            <?php if($country!=''){?>
                            <option value="<?php echo $country;?>"><?php echo $country;?></option>
                            <?php }else{ ?>
                            <option value="">-- Select Country --</option>
                            <?php }?>
                            <?php
                                 while($country_arr = mysql_fetch_array($result_country)){
                                    $tag_selected = ( (isset($_POST['country']) and $_POST['country'] == $country_arr['Country'] )? 'selected="selected"' : '' );
                                     ?>
                                     <option value="<?php echo $country_arr['Country']?>" <?php echo $tag_selected; ?>><?php echo $country_arr['Country']?></option>
                                     <?php
                                 }

                            ?>
    </select> 

This works great & as expected, I get a full list of Country names populating the dropdown box.

The problem is, I am teaching myself PHP PDO / MySqli for safer coding.

On my new form I have this query to select all country name from my countries db.

$result_country = $Db->query('select Country from countries order by Country Desc');

This works as described, I know it works using a foreach loop like this.

            <?php foreach($result_country as $row) : ?>
                <h2><?php echo $row['Country']; ?></h2>
            <?php endforeach; ?>

The problem I am having is adding this foreach to my select dropdown.
Any help with this would be greatly appreciated.
Thanks

[everton.retweets]

updated

I have found the following here on Daniweb...

<?php
$pdo = new PDO('mysql:host=localhost;dbname=contisec_portal', 'root', '');
$sql = "SELECT dateid FROM date_header";
$stmt = $pdo->prepare($sql);
$stmt->execute();
$results = $stmt->fetchAll(PDO::FETCH_ASSOC);
if ($stmt->rowCount() > 0) { ?>
  <select name="fileselect">
    <?php foreach ($results as $row) { ?>
      <option value="<?php echo $row['dateid']; ?>"><?php echo $row['dateid']; ?></option>
    <?php } ?>
  </select>
<?php } ?>

This gives me a list of Country names from my countries db.

What I am trying to do now is add in the error validation,
When the form is submitted, a new list of Country names is populating the dropdown box.

On my first piece of code, the dropdown holds the value...
Can anyone help with this please?

[phorce]

First off, that is really badly laid out.. What the hell is going on there?

Second of all: What it is you're trying to do?

I.e. add in the error validation, When the form is submitted, a new list of Country names is populating the dropdown box. I don't understand :(