将包含自定义字段的类别列表拆分为两列(Wordpress)

function custom_category_list($separator = '') {
    $categories = get_the_category();
    $output = '';
    
    if ( ! empty( $categories ) ) {
        $half = ceil( count( $categories ) / 2 );
        $i = 0;
        
        foreach ( $categories as $category ) {
            $i++;
            
            if ( $i == $half ) {
                $output .= '</ul><ul class="second-column">';
            }
            
            $output .= '<li><a href="' . esc_url( get_category_link( $category->term_id ) ) . '">' . esc_html( $category->name ) . '</a></li>' . $separator;
        }
        
        $output = rtrim( $output, $separator );
    }
    
    echo $output;
}

<ul class="first-column">
    <?php custom_category_list(); ?>
</ul>