Array ou String ?

Bonjour,
Je butte sur un truc :
Cette ligne : foreach($bookmark->tags as $tag): provoque

Citation:

ErrorException
foreach() argument must be of type array|object, string given
APPPATH/Views/bookmark/index.php at line 6
Code:

1 2 3 4 5 6 7 8 9 10 <table> <tr><th>Date</th><th>Name</th><th>URL</th><th>Tags</th></tr> <?php foreach($bookmarks as $bookmark): ?> <tr><td><?= $bookmark->date ?></td><td><?= $bookmark->bookmark ?></td><td><?= $bookmark->url ?></td> <?php //dd($bookmark->tags); foreach($bookmark->tags as $tag): ?> <td><?= $tag ?></td> <?php endforeach; ?> </tr> <?php endforeach; ?>
Tandis que celle ci <td><?= $bookmark->tags ?></td> Provoque

Citation:

ErrorException
Array to string conversion
APPPATH/Views/bookmark/index.php at line 5
Code:

1 2 3 4 5 <table> <tr><th>Date</th><th>Name</th><th>URL</th><th>Tags</th></tr> <?php foreach($bookmarks as $bookmark): ?> <tr><td><?= $bookmark->date ?></td><td><?= $bookmark->bookmark ?></td><td><?= $bookmark->url ?></td> <td><?= $bookmark->tags ?></td>
$bookmark->tags est bien un array puisque dd() qui est un var_dump spécifique au framework (CI) :
dd($bookmark->tags); Retourne
Code:

1 2 3 $bookmark->tags array (1) 0 => string (9) "Dell'Orto" Called from ...
Je ne comprends pas !
Quelqu'un aurait moins de peau de saucisson devant les yeux que moi ?
Merci
Eric