Une classe PHP pour récupérer la météo

Voici une classe compatible PHP 5 pour récupérer la météo. Pour l’instancier il faut passer en paramètre le code de votre ville (à récupérer sur le site de Yahoo!Weather - exemple pour Oxford : UKXX0106) ainsi que l’unité pour la température (c ou f - optionnel c pour Celcius par défaut).

Exemple d’utilisation avec le shell interactif :

$ php -a
Interactive shell

php > include 'class.weather.php';
php > $meteo = new YWeather('UKXX0106', 'c');
php > print_r($meteo);
YWeather Object
(
    [_locationCode:protected] => UKXX0106
    [_urlComplete:protected] => http://weather.yahooapis.com/forecastrss?p=UKXX0106&u=c
    [_unit:protected] => c
    [weather] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [version] => 2.0
                )

            [channel] => SimpleXMLElement Object
                (
                    [title] => Yahoo! Weather - Oxford, UK
                    [link] => http://us.rd.yahoo.com/dailynews/rss/weather/Oxford__UK/*http://weather.yahoo.com/forecast/UKXX0106_c.html
                    [description] => Yahoo! Weather for Oxford, UK
...
php > $channel = $meteo->channel();
php > $item = $meteo->item();
php > print_r($item);
stdClass Object
(
    [condition] => stdClass Object
        (
            [text] => SimpleXMLElement Object
                (
                    [0] => Fair
                )

            [code] => SimpleXMLElement Object
                (
                    [0] => 34
...

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<?php
 
/**
 * Copyright (c) 2009, Kevin Etienne, http://www.pasunclou.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author Kevin Etienne <etienne.kevin@gmail.com>
 * @version 0.1
 * @package YWeather
 */
 
/**
 * This class get the Weather from Yahoo!Weather and
 * parses it into a weather object with usable attributes.
 */
class YWeather {
 
  /**
   * Store the location's code of the city
   * @private
   */
  protected $_locationCode;
  /**
   * Store the url of the API
   * @private;
   */
  protected $_urlComplete;
  /**
   * Store the unit's preference of the user and force him to retrieve the unit
   * throught the API (if the unit is not valid)
   * @private
   */
  protected $_unit;
 
  /**
   * create an instance of simpleXML
   * 
   * @param string $location code belong to the location (ex: UKXX0106)
   * @param char $unit unit for temperature (c or f) 
   */  
  public function __construct($location, $unit = 'c')
  {
    $this->_locationCode = $location;
    $this->_unit = $unit;
 
    $this->_urlComplete = $this->_buildURI($this->_locationCode, $this->_unit);
    $this->weather = simplexml_load_file($this->_urlComplete);
  }
 
  /**
   * call a protected method
   *
   * @param string $methodName name of the method
   * @param string $args N/A
   * @return an object for the Yahoo!Weather's namespace
   */
  public function __call($methodName, $args)
  {
    $method = "_get"  ucfirst( strtolower($methodName) );
    if (method_exists($this, $method))
    {
      return $this->$method();
    }
  }
 
  /**
   * return the complete URL to retrieve the Yahoo API
   * 
   * @param string $location code belongs to the location
   * @param char $unit unit in (c)elcius or (f)ahraneit
   * @return url composed with $location and $unit
   */
  protected function _buildURI($location, $unit = 'c')
  {
    $urlComplete = 'http://weather.yahooapis.com/forecastrss?';
    $urlComplete .= 'p='  $location;
    $urlComplete .= $unit ? '&u='  $unit : '';
    return $urlComplete;
  }
 
  /**
   * Largely inspired by the snippet originately written by
   * {@link http://pkarl.com Pete Karl} (2009).
   *
   * return an object with the location, units, wind, atmosphere and
   * astronomy parameters
   * 
   * @return object from the API namespace
   */
  protected function _getChannel()
  {
    $yWeather = $this->weather->channel->children("http://xml.weather.yahoo.com/ns/rss/1.0");
    foreach ($yWeather as $x => $channel_item)
      foreach ($channel_item->attributes() as $k => $attr)
        $yw_channel->$x->$k = $attr;
    return $yw_channel;
  }
 
  /**
   * Largely inspired by the snippet originately written by
   * {@link http://pkarl.com Pete Karl} (2009).
   * 
   * return an object with the geolocalisation, condition and forecast
   * 
   * return object from the API namespace
   */
  protected function _getItem()
  {
    $yWeather = $this->weather->channel->item->children("http://xml.weather.yahoo.com/ns/rss/1.0");
    foreach ($yWeather as $x => $yw_item)
    {
      foreach ($yw_item->attributes() as $k => $attr)
      {
        if($k == 'day') $day = $attr;
        if($x == 'forecast')
        {
          $yw_forecast->$x->$day->$k = $attr;
        }
        else $yw_forecast->$x->$k = $attr;
      }
    }
    return $yw_forecast;
  }
 
  /**
   * return the URL
   */
  public function __toString() {
    return $this->_urlComplete;
  }
 
}

Télécharger la classe YWeather.php