$output_distanze

$numero = get_post_meta( $post->ID, 'function_ospiti', true );

$pianoapp = get_post_meta( $post->ID, 'piano', true );
$pianoapp_str = empty( $pianoapp ) ? '' : "$pianoapp ";

$mq = get_post_meta( $post->ID, 'function_mq', true );
$mq_str = empty( $mq ) ? '' : "$mq m2, ";

//variante

$output_distanze = array();

$sea = get_post_meta( $post->ID, 'function_number', true );
if ( ! empty( $sea )) { $content[] = __( 'distance from the sea: ','sacconicase' ). "$sea m., ";}

$beach = get_post_meta( $post->ID, 'function_spiaggia', true );
if ( ! empty( $beach )) { $content[] = __( 'distance from the beach: ','sacconicase' ). "$beach m., ";}

$center = get_post_meta( $post->ID, 'function_centro', true );
 if ( ! empty( $center )) { $content[] = __( 'distance from the center: ','sacconicase' ). "$center m., ";}

$shops = get_post_meta( $post->ID, 'function_negozi', true );
 if ( ! empty( $shops )) { $content[] = __( 'distance from the shops: ','sacconicase' ). "$shops m., ";}

$content = get_post_meta( $post->ID, 'description_'.$lang, true );

 $post_tags = get_the_tags();
    $separator = ', ';
    $output = '';

    if ( ! empty( $post_tags ) ) {
        foreach ( $post_tags as $tag ) {
if ('animali permessi su richiesta' == $tag->name ) continue;
            $output .= $tag->name . $separator;
        }
    }
if (!has_tag ('animali permessi su richiesta', $post)) {
$output2 = "__( 'Pets not allowed', 'sacconicase' )" . '. ';

}


return '<span class="incipit_description">'. $category . ' '. $terms . '</span>' . ' ' . __( 'for','sacconicase' )  .' '. $numero   .' '. __( 'persons, ','sacconicase' ). ' '  . $mq_str . $pianoapp_str .   implode( $output_distanze, ', ').'.' . $output2 . __( 'Facilities','sacconicase' ) . ': ' . trim( $output, $separator ) . $content ;
}