<?php
$terms = get_the_terms($post->ID, 'collection', '', ', ','');

if ( ! empty( $terms ) ) { // begin empty(terms)
    $numTerm = 0;
    foreach ( $terms as $term ) { // begin foreach terms
        $numTerm++;
        /*if ($numTerm == 1){ // begin if numterm
            echo " ".$term->name;
        } else { // else if numterm
            echo ", ".$term->name;
        }*/ // end if numterm
    } // end foreach terms
} // end empty(terms)

$args = array( // begin args
    'posts_per_page' => 4,
    'tax_query' => array( // begin tax
        array(// begin tax lvl 2
            'taxonomy' => 'collection',// nom de la taxonomie à afficher
            'terms' => $term
        )// end tax lvl 2
    )// end tax
);// end args


$jms_query = new WP_Query( $args );
?>

<div id="carousel-bas" class="row">

<?php
if ( $jms_query->have_posts() ) { // begin if havepost
    while ( $jms_query->have_posts() ) {// begin while havepost
        $jms_query->the_post();
        $id = get_the_ID();
        $visuel = get_post_custom_values( 'wpcf-visuel-1', $id );
        $visuel1 = $visuel[0];
        echo get_the_title();
    }// end while havepost
}// end if havepost
?>
</div>