Php e meteo con Yahoo Weather

[AlessandroGi]

Php e meteo con Yahoo Weather

Qualcuno ha usato le api di Yahoo Wheater?

Ho questo script per mettere le condizioni Meteo, ma mi segnala un errore quando dichiaro l'oggetto di yahoo:

<?php 
/* Yahoo! Weather API component for Cakephp
 * @author Arash Hemmat www.hemmat.biz
 * @version 1.2  some bugs has been fixed.
 * @license http://www.opensource.org/licenses/mit-license.php
 * Special thanks to "Ed Eliot" (http://www.ejeliot.com/blog/38) ,I used his code for this component.
 */

/*
 * Yahoo weather component class
 */
class yahooWeatherComponent extends Object
{
    /*
     * @var bool
     */
    var $controller = true;

    /*
     * @var array
     */
    var $errors=array();

    /*
     * @var string
     */
    var $content;

    /*
     * The url of Yahoo! weather API
     * @var string
     */
    var $WEATHER_API_URL='http://weather.yahooapis.com/forecastrss?p=';

    /*
     * THe address for images, you need to change this if you want to use your own images.
     * @var string
     */
    var $WEATHER_IMAGE_BASE='http://l.yimg.com/us.yimg.com/i/us/we/52/';
    
    /*
     * initialization
     * @param bool $controller
     */
    function startup(&$controller)
    {
        $this->controller =& $controller;
    }

    /*
     * Get the weather information for given location code
     * @param string $locationCode a code that represent a location in Yahoo weather system
     * @param string $degreeUnit it could be f: Fahrenheit or c: Celsius
     * @param bool $translate this parametr indicates if the result should be translated of not
     * @return array|bool $result
     */
    function get_weather($locationCode,$degreeUnit='c')
    {
        if($this->content = file_get_contents($this->WEATHER_API_URL.$location_code.'&u='.$degreeUnit))
        {
            $result['location']=$this->GetTagAttributes('yweather:location');
            $result['condition']=$this->GetTagAttributes('yweather:condition');
            $result['units']=$this->GetTagAttributes('yweather:units');
            $result['wind']=$this->GetTagAttributes('yweather:wind');
            $result['atmosphere']=$this->GetTagAttributes('yweather:atmosphere');
            $result['astronomy']=$this->GetTagAttributes('yweather:astronomy');
            $result['geo:lat']=$this->GetTagValue('geo:lat');
            $result['geo:long']=$this->GetTagValue('geo:long');
            $result['link']=explode('*',$this->GetTagValue('link'));
            $result['pubDate']=$this->GetTagValue('pubDate');
            $result['description']=$this->GetTagValue('description');
            $result['image_url']=$this->WEATHER_IMAGE_BASE.$result['condition']['code'].'.gif';
            $forecasts=$this->GetTagAttributes('yweather:forecast');
            $result['tonight_forecast']=$forecasts[0];
            $result['tonight_forecast']['image_url']=$this->WEATHER_IMAGE_BASE.$result['tonight_forecast']['code'].'.gif';        
            $result['tomorrow_forecast']=$forecasts[1];
            $result['tomorrow_forecast']['image_url']=$this->WEATHER_IMAGE_BASE.$result['tomorrow_forecast']['code'].'.gif';
            return $result;
        }
        else
        {
            $this->errors[]='Unable to connect to yahoo api.';
            return false;
        }
    }

    /*
     * @param string $sTag
     * @return bool
     */
    function GetTagValue($sTag)
    {
        $aMatches = array();
            
        if (preg_match("/<$sTag>([^<]*)<\/$sTag>/i", $this->content, $aMatches))
        {
            $aResult = array();
            $aResult['value'] = $aMatches[1];
            return trim($aMatches[1]);
        }
        return false;
    }

    /*
     * @param string $sTag
     * @return string $aResult
     */
    function GetTagAttributes($sTag)
    {
        $aMatches = array();
            
        if (preg_match_all("/<$sTag([^\/]*)\/>/i", $this->content, $aMatches))
        {
            $aResult = array();

            for ($i = 0; $i < count($aMatches[1]); $i++)
            {
                $aSubMatches = array();

                if (preg_match_all("/([^=]+)=\"([^\"]*)\"/i", $aMatches[1]*, $aSubMatches))
                {
                    for ($j = 0; $j < count($aSubMatches[1]); $j++)
                    {
                        $aResult*[trim($aSubMatches[1][$j])] = trim($aSubMatches[2][$j]);
                    }
                }
            }
            $iNumResults = count($aResult);
            if ($iNumResults > 1)
            {
                return $aResult;
            } elseif ($iNumResults == 1)
            {
                return $aResult[0];
            }
        }
        return false;
    }
}
?>

Qualcuno ha usato questa classe o sa dirmi come fare per farlo funzionare?