Fetch WPML languages through WP CLI

wpml-cli.php

<?php
/*
Plugin Name: WPML CLI
Plugin URI: https://pantheon.io
Description: WPML CLI demo commands
Author: Kyle Taylor
Version: 1.0.0
Author URI: https://github.com/kyletaylored
*/

/**
 * WPML commands for demonstration.
 */
class WPML_CLI {

    /**
     * Return active languages
     * 
     * @param Array $args Arguments in array format.
     * @param Array $assoc_args Key value arguments stored in associated array format.
     */
    public function get_languages($args, $assoc_args) {
        $languages = apply_filters( 'wpml_active_languages', NULL, 'orderby=id&order=desc' );

        $active_count = 0;
        $active_lang = [];
        
        foreach($languages as $key => $language) {
            if ($language['active'] == 1) {
                $active_count++;
                $active_lang[] = $language['code'];
            } else {
                // Filter out inactive languages.
                if (!empty($assoc_args['active'])) {
                    unset($languages[$key]);
                }
            }
        }

        // Format output
        $data = [
            'active_count' => $active_count,
            'active' => $active_lang,
            'languages' => $languages
        ];

        $languages = json_encode($data, JSON_PRETTY_PRINT);

        WP_CLI::log( $languages );
    }

}

/**
 * Registers our command when cli get's initialized.
 *
 * @since  1.0.0
 * @author Scott Anderson
 */
function wpml_cli_register_commands() {
	WP_CLI::add_command( 'wpml', 'WPML_CLI' );
}

add_action( 'cli_init', 'wpml_cli_register_commands' );