<?php
// RAY_class_SimpleGeoCoder.php
error_reporting(E_ALL);
// API KEYS, ETC., IF REQUIRED
// require_once('local_data.php');
// PUT UP A FORM TO RECEIVE THE ADDRESS INFORMATION
if (empty($_GET))
{
?>
<html>
<head>
<title>Yahoo/Google SimpleGeoCoder Demo</title>
</head>
<body>
<form method="get">
Addr: <input type="text" name="a" autocomplete="off" />
City: <input type="text" name="c" autocomplete="off" />
ST: <input type="text" name="s" autocomplete="off" size="2" />
Zip: <input type="text" name="z" autocomplete="off" size="8" />
<input type="submit" value="go" />
</form>
</body>
</html>
<?php die();
}
// A FREEFORM LOCATION STATEMENT IS OPTIONAL - GET ADDRESS, CITY, STATE, ZIP FROM THE URL
$location = '';
if ($_GET["a"] != '') { $location .= $_GET["a"] . ' '; }
if ($_GET["c"] != '') { $location .= $_GET["c"] . ' '; }
if ($_GET["s"] != '') { $location .= $_GET["s"] . ' '; }
if ($_GET["z"] != '') { $location .= $_GET["a"] . ' '; }
$location = trim($location);
// PREPARE THE GEOCODER
$demo = new SimpleGeoCoder;
$demo->address = $_GET["a"];
$demo->city = $_GET["c"];
$demo->state = $_GET["s"];
$demo->zip = $_GET["z"];
// TEST THE YAHOO! GEOCODER
$demo->geocodeYahoo();
echo PHP_EOL . "YAHOO! ";
print_rr($demo);
// TEST THE GOOGLE GEOCODER
$demo->geocodeGoogle();
echo PHP_EOL . "GOOGLE ";
print_rr($demo);
// ALL DONE
die();
// SIMPLE GEOCODER CLASS
class SimpleGeoCoder
{
// DECLARE THE INPUT DATA
public $location;
// USE THIS FOR A FREEFORM QUERY, OR USE THE PARTS
public $address;
public $city;
public $state;
public $zip;
// DECLARE THE WORKING DATA
private $precis;
// DECLARE THE OUTPUT DATA
public $latitude;
public $longitude;
public $precision;
public $warning;
public $geocoder;
// DECLARE THE CONSTRUCTOR
public function __construct()
{
$this->latitude = 0.0;
$this->longitude = 0.0;
$this->precision = FALSE; // WANT A VALUE OF 5 OR HIGHER, HIGHER IS BETTER
$this->warning = '';
$this->geocoder = '';
unset($this->precis);
}
// DECLARE THE DATA-CLEANUP
private function _cleanup($str)
{
$str = preg_replace('/[^\' a-zA-Z0-9&!#$%()"+:?\/@,_\.\-]/', '', $str);
return trim(preg_replace('/\s\s+/', ' ', $str));
}
// DECLARE THE YAHOO! VERSION OF THE WORKHORSE
public function geocodeYahoo()
{
if (!defined('YAHOO_API')) define('YAHOO_API', 'YAHOO_API');
$this->geocoder = 'Yahoo!';
$yahooUrl = "http://local.yahooapis.com/MapsService/V1/geocode?&appid=" . YAHOO_API;
// YOU CAN ASK FOR A FREEFORM QUERY
if ($this->location != '')
{
$yahooUrl .= "&location=" . urlencode($this->_cleanup($this->location));
}
// YOU CAN ASK FOR INDIVIDUAL PIECES OF AN ADDRESS
else
{ $yahooUrl .= "&street=" . urlencode($this->_cleanup($this->address));
$yahooUrl .= "&city=" . urlencode($this->_cleanup($this->city));
$yahooUrl .= "&state=" . urlencode($this->_cleanup($this->state));
$yahooUrl .= "&zip=" . urlencode($this->_cleanup($this->zip));
}
// EXECUTE YAHOO GEOCODER QUERY
// NOTE - USE ERROR SUPPRESSION OR IT WILL BARK OUT THE YAHOO API KEY - ON FAILURE RETURNS HTTP 400 BAD REQUEST
if ($yfp = @fopen($yahooUrl, 'r'))
{
$yahooResponse = '';
while (!feof($yfp))
{
$yahooResponse .= fgets($yfp);
}
fclose($yfp);
}
else
{
return FALSE;
}
// EXAMINE THE RESULT
if ($yahooResponse != '') // NOT EMPTY, WE GOT DATA
{
$ydata = new SimpleXMLElement($yahooResponse);
// CHECK FOR ANY ERROR MESSAGE, IF NONE, EXTRACT THE DATA POINTS
$yerror = $ydata->Message;
if ($yerror == '')
{
$this->precis = (string)$ydata->Result["precision"];
$this->warning = (string)$ydata->Result["warning"];
$this->latitude = (string)$ydata->Result->Latitude;
$this->longitude = (string)$ydata->Result->Longitude;
// THESE STATEMENTS CAN BE USED TO RETURN NORMALIZED ADDRESS
$this->address = (string)$ydata->Result->Address;
$this->city = (string)$ydata->Result->City;
$this->state = (string)$ydata->Result->State;
$this->zip = (string)$ydata->Result->Zip;
// SET PRECISION TO A NUMBER VALUE
if ($this->precis == 'zip') { $this->precision = "5"; }
if ($this->precis == 'street') { $this->precision = "6"; }
if ($this->precis == 'address') { $this->precision = "8"; }
}
else
{
return FALSE;
}
}
// NO RESULT - SOMETHING IS SICK AT YAHOO
else
{
return FALSE;
}
return TRUE;
} // END function geocodeYahoo
// DECLARE THE GOOGLE VERSION OF THE WORKHORSE
public function geocodeGoogle()
{
if (!defined('GOOGLE_API')) define('GOOGLE_API', 'GOOGLE_API');
$this->geocoder = 'Google';
$googleUrl = "http://maps.google.com/maps/geo?key=" . GOOGLE_API . "&output=csv";
if ($this->location != '') // YOU CAN ASK FOR A FREEFORM QUERY
{
$googleUrl .= "&q=" . urlencode($this->_cleanup($this->location));
}
else // YOU CAN ASK FOR INDIVIDUAL PIECES OF AN ADDRESS
{
$googleUrl .= "&q=" . urlencode(trim(
$this->_cleanup($this->address)
. ' ' . $this->_cleanup($this->city)
. ' ' . $this->_cleanup($this->state)
. ' ' . $this->_cleanup($this->zip)
));
}
// EXECUTE GOOGLE GEOCODER QUERY
if ($gfp = @fopen($googleUrl, 'r'))
{
$googleResponse = '';
while (!feof($gfp))
{
$googleResponse .= fgets($gfp);
}
fclose($gfp);
}
else
{
return FALSE;
}
// EXTRACT THE DATA FROM THE CSV STRING
$gdata = explode(',',$googleResponse);
if ($gdata[0] != '200') // RESPONSE CODE SHOULD BE '200' -- IF 602 - BAD ZIP CODE OR UNUSABLE ADDRESS
{
return FALSE;
}
$this->precision = $gdata[1]; // GEOCODE ACCURACY - ZIP CODE = 5, HIGHER NUMBERS ARE BETTER
$this->latitude = $gdata[2];
$this->longitude = $gdata[3];
return TRUE;
} // END function geocodeGoogle
} // END class SimpleGeocoder
// UNRELATED FUNCTION TO MAKE THE OUTPUT SHOW THE PUBLIC INFORMATION ONLY
function print_rr($thing)
{
$str = print_r($thing, TRUE);
$arr = explode(PHP_EOL, $str);
$num = count($arr) - 1;
foreach ($arr as $ptr => $txt)
{
if (preg_match('/:private]/', $txt))
{
unset($arr[$ptr]);
}
}
echo implode(PHP_EOL, $arr);
}
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