Show all terms of a custom taxonomy?

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I made a few custom taxonomies and I need to show ALL the terms from it, what I achieved so far is showing the taxonomies that are selected/chosen in a custom post type but I need all of them to show, wether it’s selected or not.
So that later I can make a filter that filters according to which terms a custom post type value contains.

<?php 
$args=array(
  'public'   => true,
  '_builtin' => false
);
$output="names"; // or objects
$operator="and";
$taxonomies=get_taxonomies($args,$output,$operator); 
if  ($taxonomies) {
  foreach ($taxonomies  as $taxonomy ) {
    $terms = get_terms($taxonomy);
        foreach ( $terms as $term) {
?>
        <li><br><a href="#"><input type="checkbox" name="profile[]" value=""><?php echo $term->name; ?> <br/></a></li>
       <?php 
                }
              }
            }  
            ?>

What I have so far.

Thanks in advance!

4

You need to pass an additional argument to get_terms(). The default is to hide “empty” terms– terms which are assigned to no posts.

$terms = get_terms([
    'taxonomy' => $taxonomy,
    'hide_empty' => false,
]);

EDIT:

Incase you want to display the name or the slug of the enlisted custom taxonomies being held by the $terms variable you can use this piece of code bellow:

foreach ($terms as $term){
  echo $term->slug." : ";
  echo $term->name;
  echo "<br><br>";
}

Where $term->slug outputs the slug of the taxonomy item that’s enlisted and $term->name outputs the name of the according taxonomy item.

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