Posts with Previous Next Navigation

You can also using the custom queries to make the post with Previous and Next Post Navigation. Here is the following method to make it workable.

<?php
$post_list = get_posts( array(
	'orderby'    => 'menu_order',
	'sort_order' => 'asc'
) );

$posts = array();

foreach ( $post_list as $post ) {
   $posts[] += $post->ID;
}

$current = array_search( get_the_ID(), $posts );

$prevID = $posts[ $current-1 ];
$nextID = $posts[ $current+1 ];
?>

<div class="navigation">
<?php if ( ! empty( $prevID ) ): ?>
	<div class="alignleft">
		<a href="<?php echo get_permalink( $prevID ); ?>" alt="<?php echo get_the_title( $prevID ); ?>">
			<?php _e( 'Previous', 'textdomain' ); ?>
		</a>
	</div>
<?php endif;

if ( ! empty( $nextID ) ) : ?>
	<div class="alignright">
		<a href="<?php echo get_permalink( $nextID ); ?>" alt="<?php echo get_the_title( $nextID ); ?>">
			<?php _e( 'Next', 'textdomain' ); ?>
		</a>
	</div>
<?php endif; ?>
</div><!-- .navigation -->

Reset after Postlists with offset

If you need after the loop, the post you had before joining the foreach, you can use this:

<ul>
	<?php
	global $post;

	$myposts = get_posts( array(
		'posts_per_page' => 5,
		'offset'         => 1,
		'category'       => 1
	) );

	if ( $myposts ) {
		foreach ( $myposts as $post ) : 
			setup_postdata( $post ); ?>
			<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
		<?php
		endforeach;
		wp_reset_postdata();
	}
	?>
</ul>

Taxonomy Parameters

Show posts associated with certain taxonomy. If specifying a taxonomy registered to a custom post type then instead of using ‘category’ you would use ‘{custom_taxonomy_name}’. For instance, if you had a custom taxonomy called “genre” and wanted to only show posts from the “jazz” genre you would use the below code.

$show_albums = get_posts( array(
	 'posts_per_page' => 8,
	 'orderby'        => 'rand',
	 'post_type'      => 'albums',
	 'genre'          => 'jazz',
	 'post_status'    => 'publish'
) );

Following example displays posts tagged with ‘jazz’, under ‘genre’ custom taxonomy, using ‘tax_query’:

$args = array(
	'tax_query' => array(
		array(
			'taxonomy' => 'genre',
			'field'    => 'slug',
			'terms'    => 'jazz'
		)
	)
);
$postslist = get_posts( $args );

Refer to the taxonomy parameters section of the WP_Query documentation for more examples.

Get a post by its slug

Allows you to get a post ID by post slug.

<?php
$the_slug = 'my-slug';
$args=array(
	'name'           => $the_slug,
	'post_type'      => 'post',
	'post_status'    => 'publish',
	'posts_per_page' => 1
);
$my_posts = get_posts( $args );

if ( $my_posts ) {
	printf( __( 'ID on the first post found %s', 'textdomain' ), esc_html( $my_posts[0]->ID ) );
}

Latest posts ordered by title

To show the last ten posts sorted alphabetically in ascending order, the following will display their post date, title and excerpt:

$postslist = get_posts( array(
	'posts_per_page' => 10,
	'order'          => 'ASC',
	'orderby'        => 'title'
) );

if ( $postslist ) {
	foreach ( $postslist as $post ) :
		setup_postdata( $post );
		?>
		<div>
			<?php the_date(); ?>
			<br />
			<?php the_title(); ?>   
			<?php the_excerpt(); ?>
		</div>
	<?php
	endforeach; 
	wp_reset_postdata();
}

Show attachments for the current post

Do this inside The Loop (where $post->ID is available).

$attachments = get_posts( array(
	'post_type'      => 'attachment',
	'posts_per_page' => -1,
	'post_status'    => 'any',
	'post_parent'    => $post->ID
) );

if ( $attachments ) {
	foreach ( $attachments as $attachment ) {
		echo apply_filters( 'the_title' , $attachment->post_title );
		the_attachment_link( $attachment->ID , false );
	}
}