Retrieving values from a checkbox

Question

I use a php checkbox and I want to retrieve marked values.
My checkbox code :

<label for="cours">Je suis intéressé par un ou plusieurs cours :</label><br><br>
<input type="checkbox" name="cours" value="individuel">Individuel<br>
<input type="checkbox" name="cours" value="semiprive">Semi-privé<br>
<input type="checkbox" name="cours" value="minigroupe">Mini-groupe<br>
<input type="checkbox" name="cours" value="intensif">Intensif<br>
<input type="checkbox" name="cours" value="entreprise">Entreprises<br>
<input type="checkbox" name="cours" value="distance">A distance<br>
<input type="checkbox" name="cours" value="telephone">Par téléphone<br>
<input type="checkbox" name="cours" value="coaching">Coaching<br>
<input type="checkbox" name="cours" value="soutien">Soutien scolaire<br>
<input type="checkbox" name="cours" value="diplome">Diplômes officiels<br>

php :

<?php
  if(isset($_POST['envoyer']))
  {
    if(get_magic_quotes_gpc())
    {
      $cours = stripslashes(trim($_POST['cours']));
    }
  }
?>

I want to put it in the variable msg :

$msg = 'Cours : '.$cours."\r\n";

and sending the message throw the php email function.
But when I do that like this a receive just the first checked choice...
Thank you for your help.
Michaël

Answer 1

You have to change the name attribute to cours[] and then php will treat it as an array.

Read up at http://docs.php.net/faq.html