This tutorial will use Yahoo! GeoPlanet API (or Web Service) to look up the WEOID of City name which is resolved from the IP Address. The tutorial has 2 parts:
- 1. Look up the City from the current IP Address
- 2. Use a City name as an input parameter of the web service to find the WOEID
If you already have a particular City to look up, you can ignore this part.
1. Get City From IP Address
Like other posts in my blog, I’m using GeoLite City from Maxmind and PHP API to get City from the current IP Address with PHP code below:
<?php include("geoipcity.inc"); include("geoipregionvars.php"); $ip = $_SERVER['REMOTE_ADDR']; $ip = "119.225.26.234"; $gi = geoip_open("GeoLiteCity.dat",GEOIP_STANDARD); $record = geoip_record_by_addr($gi,$ip); geoip_close($gi); $city = $record->city; echo "City Name: " . $city . "<br>"; ?> |
2. Get WOEID From A City Name
First, you is required to get a Yahoo Application ID to use their Web Service. After register your application on the Yahoo! Developer Network, use the code below:
<?php $city = "Sydney"; $url_post = "http://where.yahooapis.com/v1/places.q('".urlencode($city)."')?appid=foOF4CzV34EFIIW4gz1lx0Ze1em._w1An3QyivRalpXCK9sIXT5de810JWold3ApkdMdCrc-"; $weather_feed = file_get_contents($url_post); $objDOM = new DOMDocument(); $objDOM->loadXML($weather_feed); $woeid = $objDOM->getElementsByTagName("place")->item(0)->getElementsByTagName("woeid")->item(0)->nodeValue; echo "City Name: " . $city . "<br>"; echo "WOEID: " . $woeid . "<br>"; ?> |
“foOF4CzV34EFIIW4gz1lx0Ze1em._w1An3QyivRalpXCK9sIXT5de810JWold3ApkdMdCrc-” is my Yahoo Application ID, so please ensure you replace the app id with yours.
The response is XML format with sample is shown below:
<?xml version="1.0" encoding="UTF-8"?> <places xmlns="http://where.yahooapis.com/v1/schema.rng" xmlns:yahoo="http://www.yahooapis.com/v1/base.rng" yahoo:start="0" yahoo:count="1" yahoo:total="5"> <place yahoo:uri="http://where.yahooapis.com/v1/place/1105779" xml:lang="en-us"> <woeid>1105779</woeid> <placeTypeName code="7">Town</placeTypeName> <name>Sydney</name> <country type="Country" code="AU">Australia</country> <admin1 type="State" code="AU-NSW">New South Wales</admin1> <admin2/><admin3/> <locality1 type="Town">Sydney</locality1> <locality2/> <postal/> <centroid> <latitude>-33.869629</latitude> <longitude>151.206955</longitude> </centroid> <boundingBox> <southWest> <latitude>-34.189610</latitude> <longitude>150.517166</longitude> </southWest> <northEast> <latitude>-33.578140</latitude> <longitude>151.342575</longitude> </northEast> </boundingBox> <areaRank>6</areaRank> <popRank>13</popRank> </place> </places> |
Combine together with Full source code
<?php $start_process = (float) array_sum(explode(' ',microtime())); include("geoipcity.inc"); include("geoipregionvars.php"); $ip = $_SERVER['REMOTE_ADDR']; $weather_feed = ""; $gi = geoip_open("GeoLiteCity.dat",GEOIP_STANDARD); $record = geoip_record_by_addr($gi,$ip); geoip_close($gi); $city = $record->city; if ($city == "") $city = "Sydney"; $url_post = "http://where.yahooapis.com/v1/places.q('".urlencode($city)."')?appid=foOF4CzV34EFIIW4gz1lx0Ze1em._w1An3QyivRalpXCK9sIXT5de810JWold3ApkdMdCrc-"; $weather_feed = file_get_contents($url_post); $objDOM = new DOMDocument(); $objDOM->loadXML($weather_feed); $woeid = $objDOM->getElementsByTagName("place")->item(0)->getElementsByTagName("woeid")->item(0)->nodeValue; echo "Current IP: " . $ip . "<br>"; echo "City Name: " . $city . "<br>"; echo "WOEID: " . $woeid . "<br>"; $end_process = (float) array_sum(explode(' ',microtime())); echo "<!--Execution time: ". sprintf("%.4f", ($end_process-$start_process))." seconds" . "-->"; ?> |
The output is similar with below:
Current IP: 114.141.196.80 City Name: Hunters Hill WOEID: 26198454 |
Note:
- 1. On line 18, you may assign a default City name to make sure our code works properly in case the GeoLiteCity.dat is out of date or City name is empty. Please download the latest GeoLiteCity.dat file from Maxmind or get a Pro version for more accuracy
- 2. Again, please replace my Yahoo Application ID with yours, it’s for testing purpose only.
Download all source code above includes include files & current GeoLiteCity.dat file.
