Sort and paginate custom post taxonomies alphabetically

Question

I need to sort and paginate custom taxonomy post types. i have a page where i have next and previous link. on clicking next and previous link next or previous brand(custom taxonomy) should load. I have achieved this so far

 $terms = get_the_terms( get_the_ID(), 'brand' );
if($terms) {
  $BrandId=$terms[0]->term_id;
  $nextBrandId=$BrandId+1;
  $prevBranId=$BrandId-1;
  $next=get_term_by('id', $nextBrandId, 'brand' );
  $prev=get_term_by('id', $prevBranId, 'brand' );

  //echo '<pre>';
   echo $next->slug;
    echo $prev->slug;
   // echo '</pre>';
 }

I am getting next and previous brand slug by id and they are showing randomly (if i talk in alphabetic order).

Please tell me how can i show next and previous link that are sorted by alphateicallhy.

For eg I have following brands

Versace, Valentino, Armani, Rado, CK, Tissot

If currently i am at Tissot and click next then i should go to Valentino. If i am at Tissot and click prev then i should go to Rado.

Answer 1

As I stated in comments, you can either use usort() to sort the returned array of terms, or you can just use wp_get_post_terms() which is already sorted by default by name in ascending order

$terms = wp_get_post_terms( get_the_ID(), 'brand' );
var_dump( $terms );

EDIT

Here is an example with usort() and get_the_terms()

$terms = get_the_terms( get_the_ID(), 'brand' );
usort( $terms, function ( $a, $b )
{

    return strcasecmp( $a->name, $b->name );

});

Answer 2

I was trying the same thing to achieve this but finally i found a better solution here. It works with regular taxonomies (categories) and also work with custom taxonomies. You should check its code inside or can use it as it is if the requirements are the same.