CPT permalink with taxonomy values

add_action('init', 'custom_init');
add_filter('post_type_link', 'english_permalink', 1, 3);

function custom_init(){
        register_post_type('english-posts',
            array('label' => 'English',
                'query_var' => true,
                'rewrite' => false
            )
        );

        register_taxonomy('english-categories',
            'english-posts',
            array('query_var' => true,
                'rewrite' => true
            )
        );

    global $wp_rewrite;
    $english_structure = '/%english-categories%/%english-posts%';
    $wp_rewrite->add_rewrite_tag("%english-posts%", '([^/]+)', "english-posts=");
    $wp_rewrite->add_permastruct('english-posts', $english_structure, false);
}

function english_permalink($permalink, $post_id, $leavename){
    $post = get_post($post_id);

    $rewritecode = array(
    '%english-categories%',
    $leavename? '' : '%postname%',
    $leavename? '' : '%pagename%',
    );

    if('' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft'))){

        if (strpos($permalink, '%english-categories%') !== FALSE){
        $terms = wp_get_object_terms($post->ID, 'english-categories');
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0])) $english_categories = $terms[0]->slug;
        else $english_categories = 'unassigned';
        }

    $rewritereplace = array(
        $english_categories,
        $post->post_name,
        $post->post_name,
    );
    $permalink = str_replace($rewritecode, $rewritereplace, $permalink);
    }
    else{
    }
    return $permalink;
}