Hi @manucnx
Since you’re not in a real loop you need to specify the second parameter for each function call:
<?php
$posts = get_field('brand_hp');
if( $posts ): ?>
<?php foreach( $posts as $client ): ?>
<?php
$logo_hover = get_field('logo_hover', $client->ID);
$logoclient = get_field('logo', $client->ID);
?>
<div class="brand">
<a href="<?php echo get_permalink( $client->ID ); ?>">
<img class="img-cliente" src="<?php echo $logoclient['url']; ?>" alt="<?php echo $logoclient['alt']; ?>" />
<img src="<?php echo $logo_hover['url']; ?>" alt="<?php echo $logo_hover['alt']; ?>" />
</a>
</div>
<?php endforeach; ?>
<?php endif; ?>
