Geocode.php

<?php
require("phpsqlgeocode_dbinfo.php");

define("MAPS_HOST", "maps.google.com");
define("KEY", "ABQIAAAA4GFJklKWWp3vEHU2co8TmxTYJcu___Q0FKqJZcQ5N8JdoNgE4RTRpog9-XCQBJjVXlg_3se_gzofrQ");

// 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
$db_selected = mysql_select_db($database, $connection);
if (!$db_selected) {
    die("Can\'t use db : " . mysql_error());
}

// Select all the rows in the markers table
$query = "SELECT * FROM throngregtable1 WHERE 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["address"];
        $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];
            
            $query = sprintf("UPDATE throngregtable1 " .
            " SET lat = '%s', lng = '%s' " .
            " WHERE id = '%s' LIMIT 1;",
            mysql_real_escape_string($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);
    }
}
?>