array.php

<?php
    $movies = [
        'Le Temple Maudit' => ['Harrison Ford', 'Kate Capshaw', 'Jonathan Ke Quan'],
        'La Dernière Croisade' => ['Harrison Ford', 'Sean Connery', 'Denholm Elliott'],
        'Le Royaume du Crâne de Cristal' => ['Harrison Ford', 'Karen Allen', 'Kate Blanchett'],
    ];

    foreach($movies as $cle => $actor) {
        $string = 'Dans le film '.$cle.', les acteurs sont :';
        foreach($actor as $actor) {
            $string .= " $actor,";
        }
        $string = rtrim($string, ",");
        $string .= ".<br>";
        echo $string;
    }
?>