I've defined a custom post type for "person", and I'd like to append class names to the output markup based on taxonomies that correspond to team names. For example, if a person is part of the "creative" and "interactive" teams, I'd like to output the following:

    <div class="person creative interactive">Jane</div>

I found [this thread][1] on the forum, but in my case I need to output the taxonomy names within an `echo` statement, as the output is defined as a function in my `functions.php` file.

Here is a reduced version of what I've come up with so far, based on the aforementioned thread and [this Stack Overflow thread][2]:

    function display_all_people() {
        // set up arguments for new post query
        $args = array(
            'post_type' => 'people',
            'order' => 'ASC',
    		'orderby'    => 'meta_value',
    		'meta_key'   => 'last_name'
            );
    
        $peoplePosts = new WP_Query( $args );
        if ( $peoplePosts->have_posts() ) {
            echo '<div class="people-listing">';
            while ( $peoplePosts->have_posts() ) {
                $peoplePosts->the_post();
    			$terms = get_the_terms( $post->ID, 'teams' );
    			
    			foreach ($terms as $term) {
    				echo '<div class="person' . implode('', $term->slug) . '">';
    			}
    			
                echo '<div>More markup for each person listing</div>';
    			echo '</div>';
            } 
            echo '</div>';
        } else {
            return '<p>Nothing Here.</p>';
        }
        wp_reset_postdata();
    }

Thus, I'm trying to use the `implode()` to concatenate the values of the array (i.e. "team" taxonomy names), but it doesn't seem to be working (PHP is throwing errors.) Any idea how I can successfully append the taxonomies as class names in this way? Thanks for any assistance here.


  [1]: http://wordpress.stackexchange.com/questions/39718/custom-taxonomy-term-as-class
  [2]: http://stackoverflow.com/questions/6197581/php-how-to-use-foreach-loop-inside-an-echo-statement