<?php
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<?php
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/* |
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* GeoPo Encode in PHP |
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* @author : Shintaro Inagaki |
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* @param $location (Array) |
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* @return $geopo (String) |
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*/ |
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function geopoEncode($lat, $lng) { |
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// 64characters (number + big and small letter + hyphen + underscore) |
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$chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; |
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$geopo = ""; |
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$scale = 7; |
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// Change a degree measure to a decimal number |
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$lat = ($lat + 90) / 180 * pow(8, 10); |
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$lng = ($lng + 180) / 360 * pow(8, 10); |
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// Compute a GeoPo code from head and concatenate |
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for($i = 0; $i < $scale; $i++) { |
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$geopo .= substr($chars, floor($lat / pow(8, 9 - $i) % 8) + floor($lng / pow(8, 9 - $i) % 8) * 8, 1); |
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} |
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return $geopo; |
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} |
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/* |
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* GeoPo Decode in PHP |
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* @author : Shintaro Inagaki |
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* @param $geopo (String) |
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* @return $location (Array) |
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*/ |
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function geopoDecode($geopo) { |
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// 64characters (number + big and small letter + hyphen + underscore) |
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$chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; |
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// Array for geolocation |
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$location = array (); |
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for ($i = 0; $i < strlen($geopo); $i++) { |
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// What number of character that equal to a GeoPo code (0-63) |
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$order = strpos($chars, substr($geopo, $i, 1)); |
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// Lat/Lng plus geolocation value of scale |
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$location['lat'] = $location['lat'] + floor($order % 8) * pow(8, 9 - $i); |
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$location['lng'] = $location['lng'] + floor($order / 8) * pow(8, 9 - $i); |
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} |
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// Change a decimal number to a degree measure, and plus revised value that shift center of area |
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$location['lat'] = $location['lat'] * 180 / pow(8, 10) + 180 / pow(8, strlen($geopo)) / 2 - 90; |
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$location['lng'] = $location['lng'] * 360 / pow(8, 10) + 360 / pow(8, strlen($geopo)) / 2 - 180; |
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$location['scale'] = strlen($geopo); |
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return $location; |
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} |
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$conn = pg_connect("dbname=bus user=postgres password=snmc");
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$conn = pg_connect("dbname=bus user=postgres password=snmc");
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if (!$conn) {
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if (!$conn) {
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echo "An error occured.\n";
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echo "An error occured.\n";
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exit;
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exit;
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}
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}
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$xml = simplexml_load_file("04-locatebetweenpoints.osm"); |
print_r($_REQUEST); |
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$reverse=(isset($_REQUEST["reverse"]) ? $_REQUEST["reverse"] : "off"); |
/* Access the <rating> nodes of the first movie. |
$from=pg_escape_string($_REQUEST["from"]); |
* Output the rating scale, too. */ |
$to=pg_escape_string($_REQUEST["to"]); |
foreach ($xml->node as $node) { |
$routes=$_REQUEST["routes"] ; |
$geoPo = geopoEncode((float)$node['lat'],(float)$node['lon']); |
$points=$_REQUEST["between_points"]; |
$node['lat'] = (int) ((float)$node['lat']*10000000); |
$sql = "INSERT INTO between_stops (fromLocation, toLocation, points, routes) VALUES('$from','$to','$points','$routes')"; |
$node['lon'] = (int) ((float)$node['lon']*10000000); |
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echo($node['lat'].",".$node['lon']."=$geoPo<br>"); |
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$sql = "INSERT INTO stops (geohash, lat, lng) VALUES('$geoPo','{$node['lat']}','{$node['lon']}')"; |
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$result = pg_query($conn, $sql);
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$result = pg_query($conn, $sql);
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if (!$result) {
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if (!$result) {
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echo("Error in SQL query: " . pg_last_error() ."<br>\n");
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echo("Error in SQL query: " . pg_last_error() ."<br>\n");
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}
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}
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if ($reverse === "on") { |
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$ep = explode(";",$points); |
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$epr = array_reverse($ep); |
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$p = implode(";",$epr).";"; |
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$pointsString = substr($p,1); |
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$sql = "INSERT INTO between_stops ( toLocation, fromLocation, points, routes) VALUES('$from','$to','$pointsString','$routes')"; |
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$result = pg_query($conn, $sql); |
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if (!$result) { |
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echo("Error in SQL query: " . pg_last_error() ."<br>\n"); |
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} |
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} |
flush();
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flush();
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} |
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?>
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?>
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