Ayuda Php5 e interpretación xml

[Mxlive]

Hola, tengo un script de prediccion meteorologica que utiliza la API google weather, y para geolocalizar al usuario otra api basada en la base de datos de maxmind.

El caso es que el script es compatible con php4 por que utiliza "simplexml.class" pero, yo se que desde php5 ya no es necesaria esa class por que php5 tiene soporte nativo para xml.

Entonces, me gustaria a ser posible si alguien podria introducir los cambios necesarios para que el script funcione sin necesidad de esta class. (no se programar php...)

Aqui esta el codigo:
Parte visual para el usuario:

Código PHP:

  <?php  
    require_once 'weather/includes/weather.class.php'; 
    $weather = new Weather(); 
    $informations = $weather->getInformations(); 
    $current = $weather->getCurrent(); 
    $forecast = $weather->getForecast(); 
?> 
<?php if(is_array($forecast)&&!empty($forecast)) { ?> 
<div class="current"> 
    <p>Today</p> 
    <h1><?php echo $current['temp_'.$weather->unitofmeasure];?>&deg;<?php echo strtoupper($weather->unitofmeasure);?></h1> 
    <p><?php echo $informations['city'];?></p> 
</div> 
<?php foreach ($forecast as $k => $v) {?> 
<div class="forecast"> 
    <p><?php echo $v['day_of_week'];?></p> 
    <span style="background: url('images/weather/<?php echo $v['local_icons'];?>.png') no-repeat;"></span> 
    <p><?php echo $v['high'];?>&deg;<?php echo strtoupper($weather->unitofmeasure);?> | <?php echo $v['low'];?>&deg;<?php echo strtoupper($weather->unitofmeasure);?> </p> 
</div>      
<?php } ?> 
<?php } else { ?> 
<div class="error"> 
    <h1>Weather is temporarily unavailable!</h1> 
</div> 
<?php } ?>   

Parte interna:

Código PHP:

   
require_once 'simplexml.class.php'; 
 
class Weather{ 
  
/*----------------- Options ----------------*/ 
    //Fahrenheit (f) Celsius (c) 
    var $unitofmeasure = 'c'; 
    //URLS 
    var $url = 'http://www.google.com'; 
    var $url_params = '/ig/api?weather='; 
    var $url_lang = '&hl=es'; 
    var $url_location = 'http://api.ipinfodb.com/v2/ip_query.php?key=560d860423dfac90825d0abb19dcfe60f21ba9fc4e372c3677293bd5d3b5b072&ip='; 
    //Custom Icons 
    var $local_icons = '1'; 
/*----------------- Options ----------------*/ 
     
    var $location = ""; 
     var $wArray = ""; 
    var $api_url = ""; 
    var $counter = ""; 
         
        function Weather($location="") { 
             
            $this->api_url = $this->url.$this->url_params; 
            //We may force a place 
            if ($location!=""){ 
                $this->location = $location; 
            } else { 
                $this->locateip(); 
            }             
            $this->makeArray(); 
        } 
         
        function getInformations(){ 
            $array = $this->wArray; 
             
            unset($array['forecast_conditions']); 
            unset($array['current_conditions']); 
             
            return $array['forecast_information']; 
        } 
        function getCurrent(){ 
            $array = $this->wArray; 
             
            unset($array['forecast_conditions']); 
            unset($array['forecast_information']); 
             
            return $array['current_conditions']; 
        } 
         
        function getForecast(){ 
            $array = $this->wArray; 
             
            unset($array['current_conditions']); 
            unset($array['forecast_information']); 
             
            return $array['forecast_conditions']; 
        } 
             
        function makeArray(){ 
            // build the url 
            $url = $this->api_url . $this->urlEncode($this->location); 
                         
            $xml = new simplexml(); 
            $result = $xml -> xml_load_file($url,'array'); 
                         
            $return = array(); 
            $main_array = array(); 
            //First pass (we strip @attributes) 
            $main_array = $result['weather']; 
                 
            //Forecast Information 
            $forecast_information = array(); 
            $forecast_information = $main_array['forecast_information']; 
            $return['forecast_information']['city'] = $forecast_information['city']['@attributes']['data']; 
            $return['forecast_information']['zip'] = $forecast_information['city']['@attributes']['data']; 
            $return['forecast_information']['date'] = $forecast_information['city']['@attributes']['data']; 
            $return['forecast_information']['date_time'] = $forecast_information['city']['@attributes']['data']; 
                 
            //Current Conditions 
            $current_conditions = array(); 
            $current_conditions = $main_array['current_conditions']; 
            $return['current_conditions']['condition'] = $current_conditions['condition']['@attributes']['data']; 
            $return['current_conditions']['temp_f'] = $current_conditions['temp_f']['@attributes']['data']; 
            $return['current_conditions']['temp_c'] = $current_conditions['temp_c']['@attributes']['data']; 
            $return['current_conditions']['humidity'] = $current_conditions['humidity']['@attributes']['data']; 
            $return['current_conditions']['icon'] = $current_conditions['icon']['@attributes']['data']; 
            $return['current_conditions']['wind'] = $current_conditions['wind_condition']['@attributes']['data']; 
            //Custom icons 
            if ($this->local_icons == '1') { 
                $local = $this->cleanIcon($current_conditions['icon']['@attributes']['data']); 
                 $return['current_conditions']['local_icons'] = $local; 
            } 
             
            //Forecast Conditions 
            $forecast_conditions = array(); 
             $forecast_conditions = $main_array['forecast_conditions']; 
 
            for ($i = 0; $i < count($forecast_conditions); $i++){ 
                $return['forecast_conditions'][$i]['day_of_week'] = $forecast_conditions[$i]['day_of_week']['@attributes']['data']; 
                //If the user need celsius we need to convert. 
                if ($this->unitofmeasure=='c'){ 
                    $return['forecast_conditions'][$i]['low'] = $this->fromFtoC($forecast_conditions[$i]['low']['@attributes']['data']); 
                    $return['forecast_conditions'][$i]['high'] = $this->fromFtoC($forecast_conditions[$i]['high']['@attributes']['data']); 
                } else { 
                    $return['forecast_conditions'][$i]['low'] = $forecast_conditions[$i]['low']['@attributes']['data']; 
                    $return['forecast_conditions'][$i]['high'] = $forecast_conditions[$i]['high']['@attributes']['data']; 
                } 
                $return['forecast_conditions'][$i]['icon'] = $forecast_conditions[$i]['icon']['@attributes']['data']; 
                $return['forecast_conditions'][$i]['condition'] = $forecast_conditions[$i]['condition']['@attributes']['data']; 
                // 
                if ($this->local_icons == '1') { 
                    $local_icons = $this->cleanIcon($forecast_conditions[$i]['icon']['@attributes']['data']); 
                    $return['forecast_conditions'][$i]['local_icons'] = $local_icons; 
                } 
            } 
             $this->counter = $i; 
            $this->wArray = $return; 
      
        } 
        // 
        function locateIp() { 
             
            $ip = $_SERVER["REMOTE_ADDR"]; 
             
            $xml = new simplexml(); 
             
            $url = $this->url_location.$ip.'&output=xml'; 
            $result = $xml -> xml_load_file($url,'array'); 
             
            if ( $result['CountryName'] && $result['RegionName'] && $result['City'] ) { 
                $this->location = $result['City'].','.$result['RegionName'].','.$result['CountryName']; 
            } 
            return true; 
        } 
         // 
        function fromFtoC($degrees){ 
            $degrees = ($degrees-32); 
            $degrees = ($degrees*5); 
            $degrees = ($degrees/9); 
            return round($degrees); 
        } 
        // 
        function urlEncode($string){ 
             
            $htmlentites = htmlentities($string, ENT_QUOTES, 'UTF-8'); 
            $firstPass = preg_replace('~&([a-z]{1,2})(acute|cedil|circ|grave|lig|orn|ring|slash|th|tilde|uml);~i', '$1', $htmlentites); 
            $secondPass = preg_replace('~[^0-9a-z,]+~i', '+',$firstPass); 
            $return = strtolower(trim($secondPass, ' ')); 
            unset($htmlentites); unset($firstPass); unset($secondPass); 
            return $return; 
        } 
        // 
        function cleanIcon($string){ 
            $string = substr($string,19); 
            $stringLen = strlen($string); 
            //We subtract 4 (.gif) 
            $pos = $stringLen - 4; 
            return trim(substr($string, 0, $pos)); 
        } 
    } 
?>  
  

Muchísimas gracias de antemano a quien pueda hacerlo.

[abimaelrc]

Pasa por el área de aportes, hay un tema que te puede ayudar a como realizar búsquedas en un XML usando SimpleXML o DOM. Esta explicado detalladamente.

[Mxlive]

En verdad lo unico que veo ahi (que yo entienda xD) es que lo que en el script esta como $xml = new simplexml() tendria que cambiarlo a $xml = new SimpleXMLElement();

pero de lo demas no entiendo ni papa

[abimaelrc]

Te recomiendo que leas algún manual para que te puedas desenvolver. Pasa por el wiki de este foro para que puedas ver uno que te ayudará a que lo logres.