Gestion des choix multiples (1/2)

<form action="coursPHP46.php" method="get">
<p>Nom : <input type="text" name="nom" size="10" /> <br />
Cadeaux : <br />
Livre  <input type="checkbox" name="cadeaux[]" 
                 value="livre" checked="checked" />   
Tee-shirt <input type="checkbox" name="cadeaux[]"    
                    value="tee-shirt" />
Sac <input type="checkbox" name="cadeaux[]" 
              value="sac" checked="checked" />
Sweat  <input type="checkbox" name="cadeaux[]" 
                 value="sweat" /></p>
<p><input type="submit" name="enregistrement" value="Envoyer" /></p>
</form>