WordPress loop shortcode, super useful for when you're faking post type archives using pages for SEO or for adding content above and below easily.

WordPress Loop Shortcode

<?php

if (!class_exists('FRM_Loop'))
{
    class FRM_Loop
    {
        public function __construct()
        {
            add_shortcode('loop', array(&$this, 'loop_shortcode'));
        }

        /**
         * Get a loop
         *
         * @return string
         * @author Frank Martin
         **/
        public function loop_shortcode($atts, $content = NULL)
        {
            global $wp_query;

            $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;

            $args = shortcode_atts(array(
                'post_type' => 'post',
                'posts_per_page' => get_option('posts_per_page'),
                'post_parent' => 0,
                'paged' => $paged,
            ), $atts);

            $temp = $wp_query;
            $wp_query = NULL;
            $wp_query = new WP_Query( $args );

            ob_start();

            if (have_posts()) : while (have_posts()) : the_post();

                get_template_part('content', $args['post_type']);

            endwhile; endif;

            $wp_query = NULL;
            $wp_query = $temp;

            wp_reset_query();

            return '<section class="loop">' . ob_get_clean() . '</section>';
        }
    }

    new FRM_Loop;

}