FInding nearest cities using geolocation
<?php
$ip=$_SERVER["REMOTE_ADDR"];
$user="user";
$pass="password";

$conn=mysql_connect("localhost:3306",$user,$pass);
$link=mysql_select_db("db");

$ipConv=ip2long($ip);
$sql="SELECT CITY,REGION,LATITUDE,LONGITUDE
FROM location, blocks
WHERE $ipConv
BETWEEN blocks.startIpNum
AND blocks.endIpNum
AND location.locId = blocks.locid";
$result=mysql_query($sql) or die (mysql_error());
while($row = mysql_fetch_assoc($result))
{
    $tcity=$row['CITY'];
    $tregion=$row['REGION'];
}

$sql2="SELECT COUNTRY FROM location WHERE CITY='$tcity'";
$result2=mysql_query($sql2);
while($row2 = mysql_fetch_assoc($result2))
{
    $country=$row2['COUNTRY'];
}

$sql3="SELECT CITY,REGION FROM location WHERE COUNTRY='$country' GROUP BY REGION";
$result3=mysql_query($sql3);
?>
<form>
<select>
<?php
while ($row3=mysql_fetch_assoc($result3))
{
?>
     <option <?php if ($row3['CITY']==$tcity){ ?> selected="selected"<?php } ?>)>
     <?php echo $row3['CITY']; ?>
     </option><?php
} ?>

</select>
</form>