plugin widget weather

Salve ha tutti devo sviluppare un plugin che crei un widget meteo sto usando come servizio di apikey : https://www.wunderground.com/member/api-keys questo è il mio script non funziona 🙁 potete aiutarmi per favore?
Il plug in dovrebbe fungere cosi’ :
– creo un widget da inserire in side bar
– do la possibilità all utente di inserire Titolo / citta / apikey
– mi dovrebbe ritornare la temperatura etc etc della citta richiesta

non succede niente sembra come se l apikey non funzionasse

<?php
/*
Plugin Name: meteo plugin
Plugin URI: ###
Description:
Version: 1.0
Author:
Author URI:
License: GPL2
*/

class Wunderground_Widget extends WP_Widget {

public function __construct() {
parent::__construct(
‘wunderground_widget’,
‘Wunderground Widget’,
array( ‘description’ => ‘A Widget for displaying the current weather using the Wunderground API’ )
);
}

public function widget( $args, $instance ) {
extract( $args );
$title = apply_filters( ‘widget_title’, $instance[‘title’] );
$api_key = $instance[‘api_key’];
$location = $instance[‘location’];

wp_register_style(‘meteo-style’, plugins_url(‘meteo/meteo.css’, dirname(__FILE__)));
wp_enqueue_style(‘meteo-style’);

$api_url = ‘http://api.wunderground.com/api/&#8217;.$api_key.’/conditions/forecast/q/’.$location.’.json’;
$response = wp_remote_get( $api_url );

$wunderground = json_decode($response[‘body’]);

echo $before_widget;
?>
<div class=’wunderground-widget’>
<?php if(isset($title)){ ?>
<h3 class=’widget-title’><?php echo $title ?></h3>
<?php
}

$current = $wunderground->{‘current_observation’};
$location = $current->{‘display_location’}->{‘full’};
$temp = $current->{‘feelslike_c’};
$wind = $current->{‘wind_kph’};
$wind_dir = $current->{‘wind_dir’};
$humidity = $current->{‘relative_humidity’};
$summary = $current->{‘weather’};

$forecast = $wunderground->{‘forecast’}->{‘txt_forecast’}->{‘forecastday’}[0];
$icon = $forecast->{‘icon’};
$icon_url = $forecast->{‘icon_url’};
$text = $forecast->{‘fcttext_metric’};
?>
<div>
<div class=”temp”><?php echo $temp ?>°C ” alt=”<?php echo $icon ?>”/></div>
<div class=”location”><?php echo $location ?></div>
<div class=”wind”>Vento: <?php echo $wind ?>kph (<?php echo $wind_dir ?>)</div>
<div class=”humidity”>Umido’: <?php echo $humidity ?></div>
<div class=”summary” title=”<?php echo $text ?>”>Sunto: <?php echo $summary ?></div>
</div>
</div>
<?php
echo $after_widget;
}

public function update( $new_instance, $old_instance ) {
$instance = array();
$instance[‘title’] = strip_tags( $new_instance[‘title’] );
$instance[‘api_key’] = strip_tags( $new_instance[‘api_key’] );
$instance[‘location’] = strip_tags( $new_instance[‘location’] );
return $instance;
}

public function form( $instance ) {
if ( isset( $instance[ ‘title’ ] ) ) {
$title = $instance[ ‘title’ ];
}
else {
$title = ‘New title’;
}

if ( isset( $instance[ ‘api_key’ ] ) ) {
$api_key = $instance[ ‘api_key’ ];
}
else {
$api_key = ”;
}

if ( isset( $instance[ ‘location’ ] ) ) {
$location = $instance[ ‘location’ ];
}
else {
$location = ”;
}
?>
<p>
<label for=”<?php echo $this->get_field_id( ‘location’ ); ?>”><?php _e( ‘Location:’ ); ?></label>
<input class=”widefat” id=”<?php echo $this->get_field_id( ‘location’ ); ?>” name=”<?php echo $this->get_field_name( ‘location’ ); ?>” type=”text” value=”<?php echo esc_attr( $location ); ?>” />

<label for=”<?php echo $this->get_field_id( ‘title’ ); ?>”><?php _e( ‘Title:’ ); ?></label>
<input class=”widefat” id=”<?php echo $this->get_field_id( ‘title’ ); ?>” name=”<?php echo $this->get_field_name( ‘title’ ); ?>” type=”text” value=”<?php echo esc_attr( $title ); ?>” />

<label for=”<?php echo $this->get_field_id( ‘api_key’ ); ?>”><?php _e( ‘API Key:’ ); ?></label>
<input class=”widefat” id=”<?php echo $this->get_field_id( ‘api_key’ ); ?>” name=”<?php echo $this->get_field_name( ‘api_key’ ); ?>” type=”text” value=”<?php echo esc_attr( $api_key ); ?>” />
</p>
<?php
}

}

function wunderground_widgets_init(){
register_widget( ‘Wunderground_Widget’ );
}
add_action( ‘widgets_init’, ‘wunderground_widgets_init’ );