Problema con script del tiempo con API de google

[kernelcom-com]

estimados amigos tengo un script q me determina el clima de forma automatica en tiempo real, sucede perfecto mientras tenga menor a 100 usuarios online, lo demas sucede cuando tengo mas de esa cantidad. les dejo el script

Código PHP:

  <?php   
 
ini_set("memory_limit","1500M"); 
ini_set("buffering ","0"); 
ini_set('max_execution_time',9000); 
 
 
class GoogleWeatherAPI {   
    private $city_code = '';   
    private $city = '';   
    private $domain = 'www.google.com';   
    private $prefix_images = '';   
    private $current_conditions = array();   
    private $forecast_conditions = array();   
    private $is_found = true;   
   
    /**   
    * Class constructor   
    * @param $city_code is the label of the city   
    * @param $lang the lang of the return weather labels   
    * @return ...   
    */   
        
    function __construct ($city_code,$lang='fr') {   
        $this->city_code = $city_code;   
        $this->prefix_images = 'http://'.$this->domain;   
        $this->url = 'http://'.$this->domain.'/ig/api?weather='.urlencode($this->city_code).'&hl='.$lang;   
           
        $content = utf8_encode(file_get_contents($this->url));   
           
        $xml = simplexml_load_string($content);   
           
        if(!isset($xml->weather->problem_cause)) {   
               
            $xml = simplexml_load_string($content);   
   
            $this->city = (string)$xml->weather->forecast_information->city->attributes()->data;   
   
            $this->current_conditions['condition'] = (string)$xml->weather->current_conditions->condition->attributes()->data;   
            $this->current_conditions['temp_f'] = (string)$xml->weather->current_conditions->temp_f->attributes()->data;   
            $this->current_conditions['temp_c'] = (string)$xml->weather->current_conditions->temp_c->attributes()->data;   
            $this->current_conditions['Humedad'] = (string)$xml->weather->current_conditions->humidity->attributes()->data;   
            $this->current_conditions['icon'] = $this->prefix_images.(string)$xml->weather->current_conditions->icon->attributes()->data;   
            $this->current_conditions['wind_condition'] = (string)$xml->weather->current_conditions->wind_condition->attributes()->data;   
               
            foreach($xml->weather->forecast_conditions as $this->forecast_conditions_value) {   
                $this->forecast_conditions_temp = array();   
                $this->forecast_conditions_temp['day_of_week'] = (string)$this->forecast_conditions_value->day_of_week->attributes()->data;   
                $this->forecast_conditions_temp['low'] = (string)$this->forecast_conditions_value->low->attributes()->data;   
                $this->forecast_conditions_temp['high'] = (string)$this->forecast_conditions_value->high->attributes()->data;   
                $this->forecast_conditions_temp['icon'] = $this->prefix_images.(string)$this->forecast_conditions_value->icon->attributes()->data;   
                $this->forecast_conditions_temp['condition'] = (string)$this->forecast_conditions_value->condition->attributes()->data;   
                $this->forecast_conditions []= $this->forecast_conditions_temp;   
            }   
        } else {   
            $this->is_found = false;   
        }   
    }   
    function getCity() {   
        return $this->city;   
    }   
    function getCurrent() {   
        return $this->current_conditions;   
    }   
    function getForecast() {   
        return $this->forecast_conditions;   
    }   
    function isFound() {   
        return $this->is_found;   
    }   
       
}   
 
 
 
//llama la llama 
$gweather = new GoogleWeatherAPI('lima','pe');    
 
 
 
if($gweather->isFound()) {   
 
foreach($gweather->getCurrent() as $key => $value)   
{  
if($key=='temp_c'){ $temperatura=' '.$value.'°C';  echo $temperatura; } else { echo ' '; } 
} //fin del poreach 
 
}// end if 
 
 
?>   

Ello imprime ejemplo: 25ºC

Pero sucede este error:

Código:

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 2: parser error : Opening and ending tag mismatch: meta line 1 and HEAD in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: <TITLE>302 Moved</TITLE></HEAD><BODY> in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/dprimera/public_html/online/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 6: parser error : Opening and ending tag mismatch: HEAD line 1 and HTML in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: </BODY></HTML> in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/dprimera/public_html/online/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 7: parser error : Premature end of data in tag HTML line 1 in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/***user***/public_html/temperatura.php on line 31

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 2: parser error : Opening and ending tag mismatch: meta line 1 and HEAD in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: <TITLE>302 Moved</TITLE></HEAD><BODY> in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 6: parser error : Opening and ending tag mismatch: HEAD line 1 and HTML in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: </BODY></HTML> in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: Entity: line 7: parser error : Premature end of data in tag HTML line 1 in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: in /home/***user***/public_html/temperatura.php on line 35

Warning: simplexml_load_string() [function.simplexml-load-string]: ^ in /home/***user***/public_html/temperatura.php on line 35

Fatal error: Call to a member function attributes() on a non-object in /home/***user***/public_html/temperatura.php on line 37

espero sus ayudas amigos ya que este script es muy bueno para diferentes cosas, gracia spor su aporte.