Remove duplicate using array_unique

Question

Hi I'm trying to loop through a list of tags using wordpress. The list of tags is generated through another plugin.

at present this is the code I have

    <?php foreach($entities as $entity): ?>
    <?php $str = str_replace(' ', '-', esc_attr($entity->galdesc)) ?>
    <li><a href="#" id="<?php echo $str ?>"><?php echo_safe_html(nl2br($entity->galdesc)); ?></a></li>
    <?php endforeach ?>

This outputs the list of tags as follows

    tag1
    tag1
    tag2
    tag1
    tag3

this goes on with all the tags but I'm trying to remove the duplicates, I've looked into using array_unique but cant get this to work.

Thanks

Answer 1

You need to cache the values of $entity->galdesc you already used. An approach with in_array could look like this:

<?php $tagnamesUsed = array(); ?>
<?php foreach($entities as $entity): ?>
<?php $str = str_replace(' ', '-', esc_attr($entity->galdesc)) ?>
<?php if (!in_array($entity->galdesc, $tagnamesUsed)): ?>
<li><a href="#" id="<?php echo $str ?>"><?php echo_safe_html(nl2br($entity->galdesc)); ?></a></li>
<?php $tagnamesUsed[] = $entity->galdesc; ?>
<?php endif; ?>
<?php endforeach ?>