Recent Posts Shortcode

// Add Shortcode
function recent_posts_shortcode( $atts , $content = null ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'posts' => '5',
		),
		$atts,
		'recent-posts'
	);

	// Query
	$the_query = new WP_Query( array ( 'posts_per_page' => $atts['posts'] ) );
	
	// Posts
	$output = '<ul>';
	while ( $the_query->have_posts() ) :
		$the_query->the_post();
		$output .= '<li>' . get_the_title() . '</li>';
	endwhile;
	$output .= '</ul>';
	
	// Reset post data
	wp_reset_postdata();
	
	// Return code
	return $output;

}
add_shortcode( 'recent-posts', 'recent_posts_shortcode' );