Here is an example of my GECODE script. I use it to populate my database with lat, lng.
It is WAY old and I think Google does not even issue GMAP Keys any more.
Code:
<?php
$username="";
$password="";
$db="";
define("MAPS_HOST", "maps.google.com");
define("KEY", "abababababababababababababababababababababbababababababab"); //<--- change abcdefg to your GMAP API Key
/*
add lat and lng fields to your jos_eventlist_venues as numbers of size FLOAT(10,6)
*/
// Opens a connection to a MySQL server
$connection = mysql_connect("localhost", $username, $password);
if (!$connection) {
die("Not connected : " . mysql_error());
}
// Set the active MySQL database
$db_selected = mysql_select_db($db, $connection);
if (!$db_selected) {
die("Can\'t use db : " . mysql_error());
}
// Select all the rows in the markers table
//#############
/*
$query = "SELECT * FROM markers WHERE 1";
$result = mysql_query($query);
*/
//############# QUERY TO MAKE VENUES PUBLISHED IF THEY HAVE EVENTS
$query = "update `xxxx_eventlist_venues` t1 join `xxxx_eventlist_events` t2 on t1.ID=t2.locid set t1.published=1 where t1.published=0";
$result = mysql_query($query);
//#############
$query = "SELECT * FROM `xxxx_eventlist_venues` WHERE `street` != '' AND `latitude` is null and Published =1";
$result = mysql_query($query);
//#############
if (!$result) {
die("Invalid query: " . mysql_error());
}
// Initialize delay in geocode speed
$delay = 0;
$base_url = "http://" . MAPS_HOST . "/maps/geo?output=xml" . "&key=" . KEY;
// Iterate through the rows, geocoding each address
while ($row = @mysql_fetch_assoc($result)) {
$geocode_pending = true;
while ($geocode_pending) {
$address = $row["street"] .' '.$row["city"] .' '.$row["state"] .', '.$row["plz"] .' '.$row["country"];
$id = $row["id"];
$request_url = $base_url . "&q=" . urlencode($address);
$xml = simplexml_load_file($request_url) or die("url not loading");
$status = $xml->Response->Status->code;
if (strcmp($status, "200") == 0) {
// Successful geocode
$geocode_pending = false;
$coordinates = $xml->Response->Placemark->Point->coordinates;
$coordinatesSplit = split(",", $coordinates);
// Format: Longitude, Latitude, Altitude
$lat = $coordinatesSplit[1];
$lng = $coordinatesSplit[0];
$query = sprintf("UPDATE `pv3lm_eventlist_venues` " .
" SET latitude = '%s', longitude = '%s' " .
" WHERE id = '%s' LIMIT 1;",
mysql_real_escape_string($lat),
mysql_real_escape_string($lng),
mysql_real_escape_string($id));
$update_result = mysql_query($query);
if (!$update_result) {
die("Invalid query: " . mysql_error());
}
} else if (strcmp($status, "620") == 0) {
// sent geocodes too fast
$delay += 100000;
} else {
// failure to geocode
$geocode_pending = false;
echo "Address " . $address . " failed to geocoded. ";
echo "Received status " . $status . "
\n";
}
usleep($delay);
}
}
?>
someday 
