How to add an “or” instead of and “and” (&) in a Wordpress query?

Question

I would like to accomplish something like this:

        <?php $custom_posts = new WP_Query(); ?>
        <?php $custom_posts->query('category_name=Business OR category_name=Technology OR category_name= Lifestyle'); ?>
        <?php while ($custom_posts->have_posts()) : $custom_posts->the_post(); ?>
            <div class="content-block-14">
                <h2><a href="<?php the_permalink(); ?>" title="<?php printf( esc_attr__( 'Permalink to %s', 'twentyten' ), the_title_attribute( 'echo=0' ) ); ?>" rel="bookmark"><?php the_title(); ?></a></h2>
                <?php the_content(); ?>
            </div>
        <?php endwhile; ?>

So that if the post belongs to only one of those categories it should be listed in that loop.

Any suggestions?

Answer 1

If you have the category ID you can use the category__in parameter eg:

<?php $custom_posts->query(array('category__in' =>array(1,2,3))); ?>