Shortcode to print all user meta on a wordpress page.

user-meta-list.php

<?php 
/**
 * Get list of all user meta
 * @package WordPress
 * @uses    shortcode  [bnsw_userprint="user_id"]  Or whatever name you register 
 */
function bnswfields_user_list_meta($atts)
{

    if ( !isset( $atts['user_id'] ) ){
		$user = wp_get_current_user();
		$atts['user_id'] = $user->ID;
	}
    ob_start();
        print( '<h4>User Meta</h4>' );
    
    $user_info = get_user_meta($atts['user_id']);
    echo '<pre>';
    print_r($user_info);
    echo '</pre>';

    $output = ob_get_clean();
    
        return $output;
}