category support in shortcode

// category support in shortcode if want to support category by shortcode then create new category for every post suppose if you want to use 4 post then make seperately  4 new category

<div class="container">
	<div class="row">
		<div class="col-md-6">
			<div class="bootstrap_accordion">
				<?php
					$loop = new WP_Query(array('post_type' => 'accordion_bar', 'posts_per_page' =>-1));
					$count =0;
				?>
					<?php if ( $loop ) :

						while ( $loop->have_posts() ) : $loop->the_post(); ?>

							<?php
							$terms = get_the_terms( $post->ID, 'accordion_category' ); // name of the taxonomy

							if ( $terms && ! is_wp_error( $terms ) ) :
								$links = array();

								foreach ( $terms as $term )
								{
									$links[] = $term->name;
								}
								$links = str_replace(' ', '-', $links);
								$tax = join( " ", $links );
							else :
								$tax = '';
							endif;
							?>
							<?php echo do_shortcode('[items category="'.strtolower($tax).'"]');?>
						<?php endwhile;?>
					<?php endif; ?>
			</div>
		</div>
	</div>
</div>