1

I have found this code online but it shows all child categories when on parent category:

<?php
    $this_category = get_category( $cat );
    $child_categories = get_categories( array( 'child_of' => $this_category->cat_ID,'depth' => 1));
    foreach( $child_categories as $category ) { 
        $category_url = get_category_link( $category->term_id );
        $category_name = $category->cat_name; ?>
        <div class="col3">
                <img src="<?php echo z_taxonomy_image_url($category->term_id, array(365, 165)); ?>">
            <h3><a href="<?php echo $category_url?>"><?php echo $category_name?></a></h3>
        </div><?php
    }

For example if I have

Parent
-Child
--Child 2
---Child 3
Parent 2

When someone clicks on Child it should show only Child 2. This code now shows both Child 2 and Child 3 when someone clicks Child.

0

'depth' is not a parameter for the function get_categories(); to get only direct child categories, try working with 'parent' instead of 'child_of'

https://developer.wordpress.org/reference/functions/get_categories/ https://developer.wordpress.org/reference/functions/get_terms/

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