Anzahl angezeigte Beiträge pro Seite // Thumbnails in Gallery

<?php $i = 1; ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
    <div class="item<?php if ($i%4 == 0) echo(' last'); ?>">
        <div class="item-image">
            <?php
            $width = 207;
            $height = 136;
            $titletext = get_the_title();


            $thumbnail = get_thumbnail($width,$height,'portfolio',$titletext,$titletext,true,'Portfolio');
            $thumb = $thumbnail["thumb"];
            print_thumbnail($thumb, $thumbnail["use_timthumb"], $titletext, $width, $height, 'portfolio'); ?>
            <span class="overlay"></span>


            <a class="zoom-icon fancybox" title="<?php the_title(); ?>" rel="gallery" href="<?php echo esc_url( $thumbnail['fullpath'] ); ?>"><?php esc_html_e('Zoom in','DeepFocus'); ?></a>
            <a class="more-icon" href="<?php the_permalink(); ?>"><?php esc_html_e('Read more','DeepFocus'); ?></a>
        </div> <!-- end .item-image -->
    </div> <!-- end .item -->
<?php $i++; endwhile; ?>
    <div class="clear"></div>
    <?php
        if ( ! is_home() ){
            if(function_exists('wp_pagenavi')) { wp_pagenavi(); }
            else { get_template_part('includes/navigation'); }
        }
    ?>
<?php else : ?>
    <?php get_template_part('includes/no-results'); ?>
<?php endif; ?>