Why isn't this working?

I can't get the links to work on this script ( echo '<a href="/city/' .$abbr. '-' .$countyurl. '-' .$cityurl. '.html" ). Something wrong with the looping but I can't figure it out. It's not getting the variables for $abbr, $cityurl, and $countyurl. Please help

<?php
include 'config.php';
include 'opendb.php';

$query = "SELECT cityurl, countyurl, abbr, term AS tag, COUNT(term) AS quantity
FROM tag_cloud 
GROUP BY term
ORDER BY term ASC";

$result = mysql_query($query);

while ($row = mysql_fetch_array($result)) {
    $cityurl[$row['cityurl']];
	$countyurl[$row['countyurl']];
	$abbr[$row['abbr']];
	$tags[$row['tag']] = $row['quantity'];
}

// change these font sizes if you will
$max_size = 200; // max font size in %
$min_size = 100; // min font size in %

// get the largest and smallest array values
$max_qty = max(array_values($tags));
$min_qty = min(array_values($tags));

// find the range of values
$spread = $max_qty - $min_qty;
if (0 == $spread) { // we don't want to divide by zero
    $spread = 1;
}

// determine the font-size increment
// this is the increase per tag quantity (times used)
$step = ($max_size - $min_size)/($spread);

// loop through our tag array
foreach ($tags as $key => $value) {

    // calculate CSS font-size
    // find the $value in excess of $min_qty
    // multiply by the font-size increment ($size)
    // and add the $min_size set above
    $size = $min_size + (($value - $min_qty) * $step);
    // uncomment if you want sizes in whole %:
    // $size = ceil($size);

    // you'll need to put the link destination in place of the #
    // (assuming your tag links to some sort of details page)
    echo '<a href="/city/' .$abbr. '-' .$countyurl. '-' .$cityurl. '.html" style="font-size: '.$size.'%"';
    // perhaps adjust this title attribute for the things that are tagged
    echo ' title="'.$value.' things tagged with '.$key.'"';
    echo '>'.$key.'</a> ';
    // notice the space at the end of the link
}

include 'closedb.php';

?>

PHP:

 

$cityurl[$row['cityurl']];
$countyurl[$row['countyurl']];
$abbr[$row['abbr']];
$tags[$row['tag']] = $row['quantity'];

would be useful to have an '=' on those lines so that the variables are assigned.

 

This kind of works but gives same variables for every link. So, probably something along these lines:

$cityurl = $row['cityurl'];
	$countyurl = $row['countyurl'];
	$abbr = $row['abbr'];
	$tags[$row['tag']] = $row['quantity'];

PHP: