How to rearrange WordPress categories order

The code above will look for a specific category (Don’t forget to update line 5) and will replace it on top of all other categories. The code has to be pasted in your functions.php file.

<?php
$categories = get_terms('books_category');

for( $i=0; $i<sizeof($categories); $i++ ){
  if ( $categories[$i]->name == 'New Publications' ) :
    $latest = array($categories[$i]);
    unset($categories[$i]);
  endif;
}

if( isset($latest) )
  array_splice( $categories, 0, 0, $latest );
?>

Thanks to WP Snippets for the great hack!