Hello,
I'm still very new to using google maps but it does seem pretty damn
ace. I've already completed working with google mpas/php/mysql with a
little bit of help i may add.
I xml output for this tutorial isnt quite working. I can only seem to
echo out the end tag:
"<markers/>"
I'm not exactly sure why, I will post my code below. I connect to my
db in a seperate file and that is working i did a quick test and
called all the rows and it pulled back a mysql_num_rows of 169.
My code is:
"<?php
require("connect_google.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);
// 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);
if (!$result) {
die("Invalid query: " . mysql_error());
}
header("Content-type: text/xml");
// Iterate through the rows, adding XML nodes for each
while ($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();
?>
"
I'd appreciate it if anyone could help me out, as i said i'm brand new
to google maps and also xml really in this sense.
Thanks
Jonathon
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