Changing from Google maps api v2 to v3 - google-maps

Question

I've been using Google geocoding v3 for about 6 months but all of a sudden it's stopped working (I get a 610 error). It's only stopped in the last week or so.
Then I came across this (see the pink box at the top of the page!): https://developers.google.com/maps/documentation/geocoding/v2/
I've read through all the documentation and not sure where to start!
I'm hoping it's a small change as it's taken a long time to get this far, can anyone help?
[See the full site here][1]
UPDATE:
require("database.php");
// Opens a connection to a MySQL server
$con = mysql_connect("localhost", $username, $password);
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("teamwork_poh", $con);
$company = get_the_title();
$address = get_field('address_line_1');
$city = get_field('town_/_city');
$post_code = get_field('post_code');
$link = get_permalink();
$type = get_field('kind_of_organisation');
$sql = sprintf("select count('x') as cnt from markers where `name` = '%s'", mysql_real_escape_string($company));
$row_dup = mysql_fetch_assoc(mysql_query($sql,$con));
if ($row_dup['cnt'] == 0) {
mysql_query("INSERT INTO markers (`name`, `address`, `lat`, `lng`, `type`, `link`) VALUES ('".$company."', '".$address.", ".$city.", ".$post_code."', '0.0', '0.0', '".$type."', '".$link."')");
}
wp_reset_query();
require("database.php");
define("MAPS_HOST", "maps.googleapis.com");
define("KEY", "(my key)");
// 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());
}
$query = "SELECT * FROM markers WHERE 1";
$result = mysql_query($query);
if (!$result) {
die("Invalid query: " . mysql_error());
}
//Initialize delay in geocode speed
$delay=0;
$base_url = "http://" . MAPS_HOST . "/maps/api/geocode/json?address=";
while ($row = #mysql_fetch_assoc($result)) {
if (!($row['lat'] * 1)) {
$geocode_pending = true;
while ($geocode_pending){
$address = $row["address"];
$id = $row["id"];
$request_url = $base_url . "" . urlencode($address) ."&sensor=false";
sleep(0.1);
$json = file_get_contents($request_url);
$json_decoded = json_decode($json);
$status = $json_decoded->status;
if (strcmp($json_decoded->status, "OK") == 0) {
$geocode_pending = false;
$lat = $json_decoded->results[0]->geometry->location->lat;
$lng = $json_decoded->results[0]->geometry->location->lng;
// echo 'here';
$query = sprintf("UPDATE markers " .
" SET lat = '%s', lng = '%s' " .
" WHERE id = '%s' LIMIT 1;",
mysql_real_escape_string($lat),
mysql_real_escape_string($lng),
mysql_real_escape_string($id));
$update_result = mysql_query($query);
echo $id;
if (!$update_result) {
die("Invalid query: " . mysql_error());
}
}
else {
// failure to geocode
$geocode_pending = false;
echo "Address " . $address . " failed to geocode. ";
echo "Received status " . $status . "\n";
}
// usleep($delay);
}
}
}

Answer 1

As you are storing the coordinates in database it would be best to geocode when you insert new record.
ie
require("dbinfo.php");//Your database parameters
//Connect to database
$dbh = new PDO("mysql:host=$host;dbname=$database", $username, $password);
$dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
try {
//Prepare query
$name = "%".$company."%";//Wildcard for PDO paramerter
$countSql = "SELECT COUNT(*) FROM markers WHERE `name` LIKE ?";
$countStmt = $dbh->prepare($countSql);
// Assign parameter
$countStmt->bindParam(1,$name);
//Execute query
$countStmt->execute();
// check the row count
if ($countStmt->fetchColumn() == 0) { #1 EDIT changed >0 to ==0
echo "No row matched the query."; //EDIT From Row
$q =$address.','.$city.','.$post_code.',UK';
echo "\n";
$base_url = "http://maps.googleapis.com/maps/api/geocode/xml?address=";
$request_url = $base_url.urlencode($q)."&sensor=false";
$xml = simplexml_load_file($request_url) or die("url not loading");
if($xml->status=="OK"){#2
// Successful geocode
$lat = $xml->result->geometry->location->lat;
$lng = $xml->result->geometry->location->lng;
$insertSql ="INSERT INTO markers (`name`, `address`, `lat`, `lng`, `type`, `link`) VALUES (?,?,?,?,?,?)";
$insertStmt = $dbh->prepare($insertSql);
// Assign parameter
$insertStmt->bindParam(1,$company);
$insertStmt->bindParam(2,$address);
$insertStmt->bindParam(3,$lat);
$insertStmt->bindParam(4,$lng);
$insertStmt->bindParam(5,$type);
$insertStmt->bindParam(6,$link);
//Execute query
$insertStmt->execute();
} #2
else{
"No rows inserted.";
}#2
} #1
else {#1
echo "Rows matched the query."; //EDIT From No row
} #1
}// End try
catch(PDOException $e) {
echo "I'm sorry I'm afraid you can't do that.". $e->getMessage() ;// Remove or modify after testing
file_put_contents('PDOErrors.txt',date('[Y-m-d H:i:s]').", myFile.php, ". $e->getMessage()."\r\n", FILE_APPEND);
}
I have converted your code to PDO as it is advisable to stop using mysql_functions as these a deprecated.
I have left you to implement how you will deal with geocoding not returning coordinates. You can also check and deal with the following status codes
OVER_QUERY_LIMIT
ZERO_RESULTS
REQUEST_DENIED
INVALID_REQUEST
See pastebin For status code implementation

Answer 2

Going by our earlier comments, there are just a couple of changes required that should get you back on your feet.
These are, changing the address for v3 geocoding
define("MAPS_HOST", "maps.googleapis.com");
$base_url = "http://" . MAPS_HOST . "/maps/api/geocode/xml?";
$request_url = $base_url . "address=" . urlencode($address) . "&sensor=false";
And secondly changing the path in the returned xml file for setting lat/long
$coordinates = $xml->Response->Placemark->Point->coordinates;
$coordinatesSplit = split(",", $coordinates);
// Format: Longitude, Latitude, Altitude
$lat = $coordinatesSplit[1];
$lng = $coordinatesSplit[0];
Can be completely replaced with
$lat = $xml->result->geometry->location->lat;
$lng = $xml->result->geometry->location->lng;
The next piece about stopping it from going over geocoding limits. What you need to do is set a simple check before you run through the geocoding.
while ($row = #mysql_fetch_assoc($result)) {
if (!($row['lat'] * 1)) {// add this line
$geocode_pending = true;
while ($geocode_pending){
//do geocoding stuff
}
}
}// add this close
}