| <?php | <?php |
| /* | /* |
| * GeoPo Encode in PHP | * GeoPo Encode in PHP |
| * @author : Shintaro Inagaki | * @author : Shintaro Inagaki |
| * @param $location (Array) | * @param $location (Array) |
| * @return $geopo (String) | * @return $geopo (String) |
| */ | */ |
| function geopoEncode($lat, $lng) | function geopoEncode($lat, $lng) |
| { | { |
| // 64characters (number + big and small letter + hyphen + underscore) | // 64characters (number + big and small letter + hyphen + underscore) |
| $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; | $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; |
| $geopo = ""; | $geopo = ""; |
| $scale = 7; | $scale = 7; |
| // Change a degree measure to a decimal number | // Change a degree measure to a decimal number |
| $lat = ($lat + 90) / 180 * pow(8, 10); | $lat = ($lat + 90) / 180 * pow(8, 10); |
| $lng = ($lng + 180) / 360 * pow(8, 10); | $lng = ($lng + 180) / 360 * pow(8, 10); |
| // Compute a GeoPo code from head and concatenate | // Compute a GeoPo code from head and concatenate |
| for ($i = 0; $i < $scale; $i++) { | for ($i = 0; $i < $scale; $i++) { |
| $geopo .= substr($chars, floor($lat / pow(8, 9 - $i) % 8) + floor($lng / pow(8, 9 - $i) % 8) * 8, 1); | $geopo .= substr($chars, floor($lat / pow(8, 9 - $i) % 8) + floor($lng / pow(8, 9 - $i) % 8) * 8, 1); |
| } | } |
| return $geopo; | return $geopo; |
| } | } |
| /* | /* |
| * GeoPo Decode in PHP | * GeoPo Decode in PHP |
| * @author : Shintaro Inagaki | * @author : Shintaro Inagaki |
| * @param $geopo (String) | * @param $geopo (String) |
| * @return $location (Array) | * @return $location (Array) |
| */ | */ |
| function geopoDecode($geopo) | function geopoDecode($geopo) |
| { | { |
| // 64characters (number + big and small letter + hyphen + underscore) | // 64characters (number + big and small letter + hyphen + underscore) |
| $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; | $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_"; |
| // Array for geolocation | // Array for geolocation |
| $location = array(); | $location = array(); |
| for ($i = 0; $i < strlen($geopo); $i++) { | for ($i = 0; $i < strlen($geopo); $i++) { |
| // What number of character that equal to a GeoPo code (0-63) | // What number of character that equal to a GeoPo code (0-63) |
| $order = strpos($chars, substr($geopo, $i, 1)); | $order = strpos($chars, substr($geopo, $i, 1)); |
| // Lat/Lng plus geolocation value of scale | // Lat/Lng plus geolocation value of scale |
| $location['lat'] = $location['lat'] + floor($order % 8) * pow(8, 9 - $i); | $location['lat'] = $location['lat'] + floor($order % 8) * pow(8, 9 - $i); |
| $location['lng'] = $location['lng'] + floor($order / 8) * pow(8, 9 - $i); | $location['lng'] = $location['lng'] + floor($order / 8) * pow(8, 9 - $i); |
| } | } |
| // Change a decimal number to a degree measure, and plus revised value that shift center of area | // Change a decimal number to a degree measure, and plus revised value that shift center of area |
| $location['lat'] = $location['lat'] * 180 / pow(8, 10) + 180 / pow(8, strlen($geopo)) / 2 - 90; | $location['lat'] = $location['lat'] * 180 / pow(8, 10) + 180 / pow(8, strlen($geopo)) / 2 - 90; |
| $location['lng'] = $location['lng'] * 360 / pow(8, 10) + 360 / pow(8, strlen($geopo)) / 2 - 180; | $location['lng'] = $location['lng'] * 360 / pow(8, 10) + 360 / pow(8, strlen($geopo)) / 2 - 180; |
| $location['scale'] = strlen($geopo); | $location['scale'] = strlen($geopo); |
| return $location; | return $location; |
| } | } |
| $conn = pg_connect("dbname=bus user=postgres password=snmc"); | $conn = pg_connect("dbname=bus user=postgres password=snmc"); |
| if (!$conn) { | if (!$conn) { |
| echo "An error occured.\n"; | echo "An error occured.\n"; |
| exit; | exit; |
| } | } |
| if ($_REQUEST['newlatlng']) { | if ($_REQUEST['newlatlng']) { |
| $latlng = explode(";", $_REQUEST['newlatlng']); | $latlng = explode(";", $_REQUEST['newlatlng']); |
| $lat = (float)$latlng[0]; | $lat = (float)$latlng[0]; |
| $lng = (float)$latlng[1]; | $lng = (float)$latlng[1]; |
| $geoPo = geopoEncode($lat, $lng); | $geoPo = geopoEncode($lat, $lng); |
| $nodelat = (int)($lat * 10000000); | $nodelat = (int)($lat * 10000000); |
| $nodelon = (int)($lng * 10000000); | $nodelon = (int)($lng * 10000000); |
| echo($nodelat . "," . $nodelon . "=$geoPo<br>"); | echo($nodelat . "," . $nodelon . "=$geoPo<br>"); |
| $sql = "UPDATE stops SET geohash='$geoPo', lat='$nodelat', lng='$nodelon' WHERE geohash = '{$_REQUEST['oldgeopo']}'"; | $sql = "UPDATE stops SET geohash='$geoPo', lat='$nodelat', lng='$nodelon', name=null, suburb=null WHERE geohash = '{$_REQUEST['oldgeopo']}'"; |
| $result = pg_query($conn, $sql); | $result = pg_query($conn, $sql); |
| if (!$result) { | if (!$result) { |
| echo("Error in SQL query: " . pg_last_error() . "<br>\n"); | echo("Error in SQL query: " . pg_last_error() . "<br>\n"); |
| } else if (pg_affected_rows($result) == 0) { | |
| echo ("Error 0 points moved, please refresh page and try again"); | |
| } else { | } else { |
| echo $_REQUEST['oldgeopo'] . " replaced with $geoPo <br>"; | echo $_REQUEST['oldgeopo'] . " replaced with $geoPo <br>"; |
| $updatedroutes = 0; | $updatedroutes = 0; |
| $result_outdatedroutes = pg_query($conn, "Select * FROM between_stops where points LIKE '%" . $_REQUEST['oldgeopo'] . ";%'"); | $result_outdatedroutes = pg_query($conn, "Select * FROM between_stops where points LIKE '%" . $_REQUEST['oldgeopo'] . ";%'"); |
| while ($outdatedroute = pg_fetch_assoc($result_outdatedroutes)) { | while ($outdatedroute = pg_fetch_assoc($result_outdatedroutes)) { |
| $newpoints = str_replace($_REQUEST['oldgeopo'], $geoPo, $outdatedroute['points']); | $newpoints = str_replace($_REQUEST['oldgeopo'], $geoPo, $outdatedroute['points']); |
| $sql = "UPDATE between_stops set points='$newpoints' where fromlocation = '{$outdatedroute['fromlocation']}' AND tolocation = '{$outdatedroute['tolocation']}' "; | $sql = "UPDATE between_stops set points='$newpoints' where |
| fromlocation = '".pg_escape_string($outdatedroute['fromlocation']). | |
| "' AND tolocation = '".pg_escape_string($outdatedroute['tolocation'])."' "; | |
| $result = pg_query($conn, $sql); | $result = pg_query($conn, $sql); |
| if (!$result) { | if (!$result) { |
| echo("Error in SQL query: " . pg_last_error() . "<br>\n"); | echo("Error in SQL query: " . pg_last_error() . "<br>\n"); |
| } | } |
| echo "updated ".$outdatedroute['fromlocation']."->".$outdatedroute['tolocation']."<br>"; | |
| $updatedroutes++; | $updatedroutes++; |
| } | } |
| echo "updated $updatedroutes routes<br>"; | echo "updated $updatedroutes routes<br>"; |
| } | } |
| } | } |
| flush(); | flush(); |
| ?> | ?> |