Find Current Post or Page within the loop

April 28, 2016

This example will allow for a class to be added to the current child page so it can be custom styled.

Method using the_loop():

$top_menu = new WP_Query($args);

		global $post;
		$IDOutsideLoop = $post->ID;

		if($top_menu -> have_posts()) : while($top_menu -> have_posts()) : $top_menu -> the_post(); 

			<li class="<?php the_title(); ?> <?php if($IDOutsideLoop == $post->ID) { echo "current";}?>">
				<a href="<?php the_permalink(); ?>">

					<?php the_content(); ?>

				</a>
			</li>

		<?php endwhile; endif; wp_reset_query();

Method using foreach:

<ul>

       <?php foreach((get_the_category()) as $category) { ?>

		<h3><?php echo $category->category_description . ' '; ?></h3>

       <?php $catVal = $category->cat_ID; }

		$IDOutsideLoop = $post->ID;

		global $post;

		$myposts = get_posts('category='.$catVal);

	foreach ($myposts as $post) { ?>

		<li<?php if($IDOutsideLoop == $post->ID) { echo " class=\"current\""; } ?>>

                	<a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a></li>

        <?php } ?>

</ul>

Source.

This example, sourced here, drills down to include page ancestors:

$top_menu = new WP_Query($args);

global $post;

$ancestors = get_post_ancestors($post->ID);

$root = count($ancestors) - 1;

$parent = $ancestors[$root];

if($top_menu -> have_posts()) : while($top_menu -> have_posts()) : $top_menu -> the_post(); ?>
	

	<li class="<?php the_title(); ?> <?php if(is_page() && (is_page($post->ID) || $post->post_parent == $post->ID || in_array($post->ID, $ancestors))) { echo "current";}?>">

		<?php the_title();

                the_content(); ?>

	</li>

<?php endwhile; endif; wp_reset_query();