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!