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amrishodiq/Lbs.php

Created April 2, 2012 07:57
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PHP Code Igniter library class to get latitude & longitude, get address for specified latitude & longitude, get direction from one place to another place, and so on. Most LBS concept I implemented with PHP.
Raw
Lbs.php
<?php
/**
* Written by Amri Shodiq.
* Do not hesitate to copy and paste this code.
* It's not embarassing.
*/
if (!defined('BASEPATH'))
exit ('No direct script access allowed');
class Lbs {
public function getCompleteAddress($lac, $cid) {
$latLng = $this->getLatLong($lac, $cid);
if (is_array($latLng)) {
$data = $this->getAddress($latLng["lat"], $latLng["lng"]);
// $address = $data["meta"]["message"];
$address = $data["response"]["address"];
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
$response = array(
"lat"=>$latLng["lat"],
"lng"=>$latLng["lng"],
"address"=>$address,
"city"=>$data["response"]["city"]
);
return array(
"meta"=>$meta,
"response"=>$response
);
} else {
$meta = array(
"status"=>406,
"message"=>"Location is not known."
);
return array("meta"=>$meta);
}
}
public function reverseAddress($address) {
$use_curl = false;
if ($use_curl) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://maps.googleapis.com/maps/api/geocode/json?address=" . $address . "&sensor=true");
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: application/binary"
));
curl_setopt($ch, CURLOPT_POST, 1);
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
$data = json_decode($str, true);
if (isset($data["results"]) && is_array($data["results"])) {
$latLong = $data["results"][0]["geometry"]["location"];
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
return array("meta"=>$meta, "response"=>$latLong);
} else {
$meta = array(
"status"=>406,
"message"=>"Address is not known."
);
return array("meta"=>$meta);
}
} else {
$str = @file_get_contents("http://maps.googleapis.com/maps/api/geocode/json?address=" . $address . "&sensor=true");
$data = json_decode($str, true);
if (isset($data["results"]) && is_array($data["results"])) {
$latLong = $data["results"][0]["geometry"]["location"];
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
return array("meta"=>$meta, "response"=>$latLong);
} else {
$meta = array(
"status"=>406,
"message"=>"Address is not known."
);
return array("meta"=>$meta);
}
}
}
private function getContent($url) {
$str = "";
$use_curl = false;
if ($use_curl) {
$ch = curl_init();
$useragent="Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1";
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: text/xml"
));
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
echo "STR CURL: ".$str;
} else {
$str = file_get_contents($url, 0);
}
return $str;
}
public function getWeather($lac, $cid) {
// return $this->getContent("http://www.google.com/ig/api?weather=Depok,ID");
$latLng = $this->getLatLong($lac, $cid);
if (is_array($latLng)) {
$lat = $latLng["lat"];
$lng = $latLng["lng"];
$use_curl = false;
$url = "http://maps.googleapis.com/maps/api/geocode/json?latlng=" . $lat . "," . $lng . "&sensor=true";
$str = "";
if ($use_curl) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: application/binary"
));
curl_setopt($ch, CURLOPT_POST, 1);
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
} else {
$str = @file_get_contents($url);
}
$data = json_decode($str, true);
if (isset($data["results"]) && is_array($data["results"])) {
$ac = $data["results"][0]["address_components"];
$len = count($ac);
$i = 0;
$city = "";
while ($i<$len) {
if (in_array("locality", $ac[$i]["types"])) $city = $ac[$i]["long_name"];
else if (in_array("country", $ac[$i]["types"])) $city .= ",".$ac[$i]["short_name"];
$i++;
}
// $city = $data["results"][0]["address_components"][3]["long_name"].",".$data["results"][0]["address_components"][5]["short_name"];
$url = "http://www.google.com/ig/api?weather=".str_replace("\"", "", $city);
// return $url;
// return $this->getContent($url);
return $this->getContent("http://www.google.com/ig/api?weather=Depok,ID");
} else {
return "false";
}
} else {
return "false";
}
// if (isset($data["results"]) && is_array($data["results"])) {
// $street = $data["results"][0]["formatted_address"];
// $meta = array(
// "status"=>200,
// "message"=>"Succeed."
// );
// return array("meta"=>$meta, "response"=>array("address"=>$street));
// } else {
// $meta = array(
// "status"=>406,
// "message"=>"Address is not known."
// );
// return array("meta", $meta);
// }
}
public function getAddress($lat, $lng) {
$use_curl = false;
if ($use_curl) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://maps.googleapis.com/maps/api/geocode/json?latlng=" . $lat . "," . $lng . "&sensor=true");
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: application/binary"
));
curl_setopt($ch, CURLOPT_POST, 1);
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
$data = json_decode($str, true);
if (isset($data["results"]) && is_array($data["results"])) {
$street = $data["results"][0]["formatted_address"];
$ac = $data["results"][0]["address_components"];
$len = count($ac);
$i = 0;
$city = "";
while ($i<$len) {
if (in_array("locality", $ac[$i]["types"])) $city = $ac[$i]["long_name"];
else if (in_array("country", $ac[$i]["types"])) $city .= ",".$ac[$i]["short_name"];
$i++;
}
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
return array("meta"=>$meta, "response"=>array("address"=>$street, "city"=>$city));
} else {
$meta = array(
"status"=>406,
"message"=>"Address is not known."
);
return array("meta", $meta);
}
} else {
$str = @file_get_contents("http://maps.googleapis.com/maps/api/geocode/json?latlng=" . $lat . "," . $lng . "&sensor=true");
$data = json_decode($str, true);
if (isset($data["results"]) && is_array($data["results"])) {
$street = $data["results"][0]["formatted_address"];
$ac = $data["results"][0]["address_components"];
$len = count($ac);
$i = 0;
$city = "";
while ($i<$len) {
if (in_array("locality", $ac[$i]["types"])) $city = $ac[$i]["long_name"];
else if (in_array("country", $ac[$i]["types"])) $city .= ",".$ac[$i]["short_name"];
$i++;
}
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
return array("meta"=>$meta, "response"=>array("address"=>$street, "city"=>$city));
} else {
$meta = array(
"status"=>406,
"message"=>"Address is not known."
);
return array("meta"=>$meta);
}
}
}
public function getLatLong($lac, $cid) {
if (isset ($lac) && isset ($cid)) {
$CI =& get_instance();
$CI->load->database();
$data = "\x00\x0e" .
"\x00\x00\x00\x00\x00\x00\x00\x00" .
"\x00\x00" .
"\x00\x00" .
"\x00\x00" .
"\x1b" .
"\x00\x00\x00\x00" .
"\x00\x00\x00\x00" .
"\x00\x00\x00\x00" .
"\x00\x00" .
"\x00\x00\x00\x00" .
"\x00\x00\x00\x00" .
"\x00\x00\x00\x00" .
"\x00\x00\x00\x00" .
"\xff\xff\xff\xff" .
"\x00\x00\x00\x00";
$is_umts_cell = ($cid > 65535);
if ($is_umts_cell) // GSM: 4 hex digits, UTMS: 6 hex digits
$data[0x1c] = 5;
else
$data[0x1c] = 3;
$hexlac = substr("00000000" . dechex($lac), -8);
$hexcid = substr("00000000" . dechex($cid), -8);
$data[0x1f] = pack("H*", substr($hexcid, 0, 2));
$data[0x20] = pack("H*", substr($hexcid, 2, 2));
$data[0x21] = pack("H*", substr($hexcid, 4, 2));
$data[0x22] = pack("H*", substr($hexcid, 6, 2));
$data[0x23] = pack("H*", substr($hexlac, 0, 2));
$data[0x24] = pack("H*", substr($hexlac, 2, 2));
$data[0x25] = pack("H*", substr($hexlac, 4, 2));
$data[0x26] = pack("H*", substr($hexlac, 6, 2));
/* I used file_get_contents() at my laptop webserver, but it seems like the PHP version
* at my hosting company is old and it is not supporting that.
* For the hosting company, here we're using cURL.
*/
$use_curl = false;
if ($use_curl) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.google.com/glm/mmap");
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: application/binary"
));
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_POST, 1);
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
} else {
$context = array (
'http' => array (
'method' => 'POST',
'header' => "Content-type: application/binary\r\n" . "Content-Length: " . strlen($data
) . "\r\n",
'content' => $data
));
$xcontext = stream_context_create($context);
$str = file_get_contents("http://www.google.com/glm/mmap", FALSE, $xcontext);
}
$opcode1 = ((ord($str[0]) << 8)) | ord($str[1]);
$opcode2 = ord($str[2]);
if (($opcode1 != 0x0e) || ($opcode2 != 0x1b))
return -2;
$retcode = ((ord($str[3]) << 24) | (ord($str[4]) << 16) | (ord($str[5]) << 8) | (ord($str[6])));
if ($retcode != 0)
return -2;
$lat = ((ord($str[7]) << 24) | (ord($str[8]) << 16) | (ord($str[9]) << 8) | (ord($str[10]))) / 1000000;
$lon = ((ord($str[11]) << 24) | (ord($str[12]) << 16) | (ord($str[13]) << 8) | (ord($str[14]))) / 1000000;
// exit script if cannot geocode cell e.g. not on google's database
if ($lat == 0 and $lon == 0)
return -3;
$data = array(
'cellid' => $cid,
'lac' => $lac,
'lat' => $lat,
'lon' => $lon,
);
$CI->db->insert('celltower', $data);
return array (
"lat" => $lat,
"lng" => $lon
);
} else
return -4;
}
// Reff: http://code.google.com/intl/id-ID/apis/maps/documentation/directions/
// http://localhost/rest/index.php/api/location/direction/<origin>/<destination>
// e.g: http://localhost/rest/index.php/api/location/direction/Sawangan-Depok/Senayan-Jakarta
public function getDirection($origin, $destination, $travelMode) {
$use_curl = false;
if ($use_curl) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://maps.googleapis.com/maps/api/directions/json?origin=".$origin."&destination=".$destination."&mode=".$travelMode."&sensor=false");
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, Array (
"Content-type: application/binary"
));
curl_setopt($ch, CURLOPT_POST, 1);
$response = curl_exec($ch);
if (curl_errno($ch))
return -1;
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$str = substr($response, $header_size);
curl_close($ch);
$data = json_decode($str, true);
if (isset($data["status"]) && $data["status"] == "OK") {
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
$res = $data["routes"][0]["legs"][0];
$startAddress = $res["start_address"];
$endAddress = $res["end_address"];
$startLocation = $res["start_location"];
$endLocation = $res["end_location"];
$duration = $res["duration"];
$distance = $res["distance"];
$steps = $res["steps"];
$len = count($steps);
$i = 0;
$row = array();
while ($i<$len) {
$text = $steps[$i]["html_instructions"];
$start = $steps[$i]["start_location"];
$end = $steps[$i]["end_location"];
$dist = $steps[$i]["distance"];
$dur = $steps[$i]["duration"];
array_push($row, array(
"text"=>strip_tags($text),
"start"=>$start,
"end"=>$end,
"distance"=>$dist,
"duration"=>$dur
));
$i++;
}
return array("meta"=>$meta, "response"=>array(
"start_address"=>$startAddress,
"end_address"=>$endAddress,
"start_location"=>$startLocation,
"end_location"=>$endLocation,
"duration"=>$duration,
"distance"=>$distance,
"steps"=>$row
));
} else {
$meta = array(
"status"=>406,
"message"=>"Direction is not known."
);
return array("meta"=>$meta);
}
} else {
$str = @file_get_contents("http://maps.googleapis.com/maps/api/directions/json?origin=".$origin."&destination=".$destination."&mode=".$travelMode."&sensor=false");
$data = json_decode($str, true);
if (isset($data["status"]) && $data["status"] == "OK") {
$meta = array(
"status"=>200,
"message"=>"Succeed."
);
$res = $data["routes"][0]["legs"][0];
$startAddress = $res["start_address"];
$endAddress = $res["end_address"];
$startLocation = $res["start_location"];
$endLocation = $res["end_location"];
$duration = $res["duration"];
$distance = $res["distance"];
$steps = $res["steps"];
$len = count($steps);
$i = 0;
$row = array();
while ($i<$len) {
$text = $steps[$i]["html_instructions"];
$start = $steps[$i]["start_location"];
$end = $steps[$i]["end_location"];
$dist = $steps[$i]["distance"];
$dur = $steps[$i]["duration"];
array_push($row, array(
"text"=>strip_tags($text),
"start"=>$start,
"end"=>$end,
"distance"=>$dist,
"duration"=>$dur
));
$i++;
}
return array("meta"=>$meta, "response"=>array(
"start_address"=>$startAddress,
"end_address"=>$endAddress,
"start_location"=>$startLocation,
"end_location"=>$endLocation,
"duration"=>$duration,
"distance"=>$distance,
"steps"=>$row
));
} else {
$meta = array(
"status"=>406,
"message"=>"Direction is not known."
);
return array("meta"=>$meta);
}
}
}
// Local search could use Google's local search API (deprecated) or
// custom search https://code.google.com/intl/id-ID/apis/customsearch/v1/overview.html (100 query per day, shit)
}
/* End of file Lbs.php */
?>
Raw
Location.php
<?php
/**
* Example to show how to use this Lbs library from Code Igniter controller.
* In this case I use another library to create REST web service, it's REST_Controller.php.
*/
require APPPATH.'/libraries/REST_Controller.php';
class Location extends REST_Controller {
public function __construct() {
parent :: __construct();
$this->load->library('lbs');
}
// http://localhost/rest/index.php/api/location/geocode/<LAC>/<cell-id>/
// e.g: http://localhost/rest/index.php/api/location/geocode/10001/4390/
function geocode_get($lac, $cid) {
$this->response($this->lbs->getCompleteAddress($lac, $cid), 200);
}
// http://localhost/rest/index.php/api/location/reverse/<address-space-replaced-with-dash>
// eg: http://localhost/rest/index.php/api/location/reverse/Kuningan-Jakarta
function reverse_get($address) {
$this->response($this->lbs->reverseAddress($address), 200);
}
// http://localhost/rest/index.php/api/location/address/<latitude>/<longitude>/
// eg: http://localhost/rest/index.php/api/location/address/-6.39437/106.782386/
function address_get($lat, $lng) {
$result = $this->lbs->getAddress($lat, $lng);
$this->response($result, 200);
}
// http://localhost/rest/index.php/api/location/latlong/<LAC>/<Cell-ID>/
// eg: http://localhost/rest/index.php/api/location/latlong/10001/4390/
function latlong_get($lac, $cid) {
$result = $this->lbs->getLatLong($lac, $cid);
$meta = array();
if ($result == -1) {
$meta = array(
"status"=>503,
"message"=>"Request failed. Try again later."
);
$this->response(array("meta"=>$meta), 200);
} else if ($result == -2) {
$meta = array(
"status"=>404,
"message"=>"Invalid LAC or Cell ID."
);
$this->response(array("meta"=>$meta), 200);
} else if ($result == -3) {
$meta = array(
"status"=>406,
"message"=>"Cannot determine location."
);
$this->response(array("meta"=>$meta), 200);
} else if ($result == -4) {
$meta = array(
"status"=>406,
"message"=>"Parameters is not complete."
);
$this->response(array("meta"=>$meta), 200);
} else {
$meta = array(
"status"=>200,
"message"=>"Location is found."
);
$response = $result;
$this->response(array("meta"=>$meta, "response"=>$response), 200);
}
}
function direction_get($origin, $destination, $travelMode = "driving") {
$result = $this->lbs->getDirection($origin, $destination, $travelMode);
$this->response($result);
}
function weather_get($lac, $cid) {
// $this->response($this->lbs->getWeather($lac, $cid), 200);
echo $this->lbs->getWeather($lac, $cid);
}
}
?>
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