how to make it work on advanced custom field? filter? php?

got it working with the filter method. in functions.php put:
add_filter('acf/load_value', 'eae_encode_emails');
works for me.

hmm, doens’t seem to work on all custom fields, only some … ??

What does the code look like on an example where the acf/load_value filter doesn’t work?

https://www.advancedcustomfields.com/resources/filters/acfload_value/

this works:

<?php if(get_field("adresse")): ?>
<?php the_field("adresse"); ?>
<?php endif; ?>

this doesn’t work:

<?php
$toppage=array_reverse(get_post_ancestors($post->ID));
if($toppage[1]){
echo str_replace("\n","<br/>",get_post_meta($post->post_parent, 'kontaktdaten', true));
 }
?>

any idea?

Yes, you’re fetching your custom field data manually and not through the ACF function.

Try this code:

$toppage = array_reverse( get_post_ancestors( $post->ID ) );
if( isset( $toppage[1] ) ) {
    echo eae_encode_emails( nl2br( get_post_meta( $post->post_parent, 'kontaktdaten', true ) ) );
}

Check out PHP’s nl2br() as well…

thank you so much this works! nl2br is much … shorter ??