google weather snippet (wordpress)

function weatherWidget($place) {
    //delete_transient('weatherWidget');
    $transient = 'weatherWidget';
    $weather = get_transient($transient);
    if(false === $weather) {
        $weather = json_decode(json_encode((array) simplexml_load_file('http://www.google.com/ig/api?weather='.$place)),1);
        set_transient($transient, $weather, 60 * 60 * 1); // clear cache every 60 minutes
    }
    $temp_c = $weather['weather']['current_conditions']['temp_c']['@attributes']['data'];
    $base = get_template_directory_uri().'/library/images';
    $icon = $base.$weather['weather']['current_conditions']['icon']['@attributes']['data'];
    echo "<span class='temp'>$temp_c &deg;</span><img src='$icon' alt='weather'>";
}   // end weatherWidget