Featured Post Shortcode

// Add Shortcode
function featured_post_shortcode( $atts ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'id' => '',
		),
		$atts,
		'featured_post'
	);

	// Query
	$the_query = new WP_Query( array ( 'p' => $atts['id'] ) );
	
	// Posts
	$output = '<div>';
	while ( $the_query->have_posts() ) :
		$the_query->the_post();
		$output .= '<div>' . get_the_post_thumbnail() . '</div>';
		$output .= '<h4>' . get_the_title() . '</h4>';
		$output .= '<p>' . get_the_excerpt() . '</p>';
	endwhile;
	$output .= '</div>';
	
	// Reset post data
	wp_reset_postdata();
	
	// Return code
	return $output;

}
add_shortcode( 'featured_post', 'featured_post_shortcode' );