Retrieve Post in Wordpress

Random Post Retrieve

Enter functions.php

function wpb_rand_posts() { 

$args = array(

    'post_type' => 'post',

    'orderby'   => 'rand',

'cat' => 6,

    'posts_per_page' => 5, 

    );

$the_query = new WP_Query( $args );

if ( $the_query->have_posts() ) {

$string .= '<ul>';

    while ( $the_query->have_posts() ) {

        $the_query->the_post();

        $string .= '<li class="text-white"><a href="'. get_permalink() .'" class="text-white">'. get_the_title() .'</a></li>';

    }

    $string .= '</ul>';

    /* Restore original Post Data */

    wp_reset_postdata();

} else {

$string .= 'no posts found';

}

return $string; 

} 

add_shortcode('wpb-random-posts','wpb_rand_posts');

add_filter('widget_text', 'do_shortcode');

and enter shortcode where you want list:

<?php echo do_shortcode('[wpb-random-posts]'); ?>