So like this?
<?php
require("mysql_connect.php");
// Get parameters from URL
$center_lat = $_GET["lat"];
$center_lng = $_GET["lng"];
$radius = $_GET["radius"];
// Start XML file, create parent node
$dom = new DOMDocument("1.0");
$node = $dom->createElement("markers");
$parnode = $dom->appendChild($node);
// Opens a connection to a mySQL server
$conn = mysql_connect($dbhost, $dbusername,$dbpass,$dbname);
mysql_select_db($dbname);
if (! $conn)
die(mysql_error());
// Set the active mySQL database
$db_selected = mysql_select_db($dbname, $conn);
if (!$db_selected) {
die ("Can\'t use db : " . mysql_error());
}
// Search the rows in the markers table
$query = sprintf("SELECT address, name, lat, lng, ( 3959 * acos( cos(
radians('%s') ) * cos( radians( lat ) ) * cos( radians( lng ) -
radians('%s') ) + sin( radians('%s') ) * sin( radians( lat ) ) ) ) AS
distance FROM markers HAVING distance < '%s' ORDER BY distance LIMIT 0 ,
20",
mysql_real_escape_string($center_lat),
mysql_real_escape_string($center_lng),
mysql_real_escape_string($center_lat),
mysql_real_escape_string($radius));
$result = mysql_query($query);
$result = mysql_query($query);
if (!$result) {
die("Invalid query: " . mysql_error());
}
// Iterate through the rows, adding XML nodes for each
while ($row = @mysql_fetch_assoc($result)){
$node = $dom->createElement("marker");
$newnode = $parnode->appendChild($node);
$newnode->setAttribute("name", $row['name']);
$newnode->setAttribute("address", $row['address']);
$newnode->setAttribute("lat", $row['lat']);
$newnode->setAttribute("lng", $row['lng']);
$newnode->setAttribute("distance", $row['distance']);
}
echo $dom->saveXML();
?>
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