Shortcode to display number of 5-star ratings of a plugin on the WordPress.org Plugin Directory (aka Plugin Repo)

give5stars.php

<?php 
add_shortcode( 'give5stars', 'get_give_five_stars' );

function get_give_five_stars() {

    $plugin_slug = 'give';

    // Get any existing copy of our transient data
    if ( false === ( $cachedresults = get_transient( 'wp-plugin-repo-data-' . $plugin_slug ) ) ) {
        // It wasn't there, so regenerate the data and save the transient
        $not_cached = 'Not Cached!';
        $cachedresults = call_plugin_repo_api($slug=$plugin_slug);
        set_transient( 'wp-plugin-repo-data-' . $plugin_slug, $cachedresults, 12 * HOUR_IN_SECONDS );
    } else {
        $not_cached = 'Cached!';
    }

    var_dump(get_transient( 'wp-plugin-repo-data-' . $plugin_slug ));
    return '<p><strong>"' . ucwords(str_replace("-"," ",$cachedresults->slug)) . '"</strong> currently has <strong>' . $cachedresults->ratings[5] . '</strong> 5-star ratings. And this response is ' . $not_cached . '</p>';
}

function call_plugin_repo_api($slug) {

    // Require plugin-install.php to query the Repo correctly
    if( !function_exists( 'plugins_api' ) ) {
        require_once(ABSPATH . 'wp-admin/includes/plugin-install.php' );
    }

    // Only get the information we really want from the Repo API
    $call_api = plugins_api( 'plugin_information',
        array(
            'slug' => $slug,
            'fields' => array(
                //'name' => true, -- required, cannot disable
                //'slug' => true, -- required, cannot disable
                //'version' => false, -- required, cannot disable
                //'author' => false, -- required, cannot disable
                //'contributors' => false, -- required, cannot disable
                'requires' => false,
                'tested' => false,
                'compatibility' => false,
                'rating' => true,
                'num_ratings' => false,
                'ratings' => true,
                'downloaded' => false,
                'last_updated' => false,
                'added' => false,
                'homepage' => false,
                'sections' => false,
                'tags' => false,
                'active_installs' => false,
                'reviews' => false,
                //'download_link' => false, -- required, cannot disable
                //'donate_link' => false, -- required, cannot disable
            ) ) );

    return $call_api;
}