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<?php

// Define custom query parameters
$custom_query_args = array(
	'post_type' => 'servizi',
	'showposts' => 3,
	'post_parent' => 0,
);

// Get current page and append to custom query parameters array
$custom_query_args['paged'] = get_query_var( 'paged' ) ? get_query_var( 'paged' ) : 1;

// Instantiate custom query
$custom_query = new WP_Query( $custom_query_args );

// Pagination fix
$temp_query = $wp_query;
$wp_query   = NULL;
$wp_query   = $custom_query;

// Output custom query loop
if ( $custom_query->have_posts() ) : ?>
<div class="listing-services col-group-row no-extgut no-marg">

<?php while ( $custom_query->have_posts() ) :  $custom_query->the_post();?>
<div class="col one-fourth m-1-2 s-1-1">
	<article class="item-service" data-mh="grp-service">
		<div class="icon"><?php echo file_get_contents( get_field('ico_serv_svg') ); ?></div>
		<h3 class="item-title"><a href="<?php the_permalink();?>"><?php the_title();?></a></h3>	
		<div class="text"><p><?php echo excerpt(12); ?></p></div>
		<a href="<?php the_permalink();?>" class="readmore"><i class="fa fa-long-arrow-right" aria-hidden="true"></i></a>		
	</article>
</div>
<?php endwhile; ?>
</div>

<?php endif;
// Reset postdata
wp_reset_postdata(); ?>

<?php

// Custom query loop pagination
previous_posts_link( 'Older Posts' );
next_posts_link( 'Newer Posts', $custom_query->max_num_pages );

// Reset main query object
$wp_query = NULL;
$wp_query = $temp_query;
?>

add_action('init', 'custom_rewrite_basic');
function custom_rewrite_basic() {
    global $wp_post_types;
    foreach ($wp_post_types as $wp_post_type) {
        if ($wp_post_type->_builtin) continue;
        if (!$wp_post_type->has_archive && isset($wp_post_type->rewrite) && isset($wp_post_type->rewrite['with_front']) && !$wp_post_type->rewrite['with_front']) {
            $slug = (isset($wp_post_type->rewrite['slug']) ? $wp_post_type->rewrite['slug'] : $wp_post_type->name);
            $page = get_page_by_slug($slug);
            if ($page) add_rewrite_rule('^' .$slug .'/page/([0-9]+)/?', 'index.php?page_id=' .$page->ID .'&paged=$matches[1]', 'top');
        }
    }
}

function get_page_by_slug($page_slug, $output = OBJECT, $post_type = 'page' ) {
    global $wpdb;

    $page = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_name = %s AND post_type= %s AND post_status = 'publish'", $page_slug, $post_type ) );

    return ($page ? get_post($page, $output) : NULL);
}

// Ricordarsi che questi parametri siano settati così!

$args = array(
    'hierarchical'          => true,
    'has_archive'           => false,       
    'rewrite'     => array(
        'slug'       => 'servizi', // if you need slug
        'with_front' => false
    )
);