Query_post($args)
Refer to multiple custom field handling in WP_Query: $args = array( ‘meta_query’ => array( ‘relation’ => ‘OR’, array( ‘key’ => ‘city_1’, ‘value’ => array(‘NY’,’LA’), ‘compare’ => ‘IN’ ), array( ‘key’ => ‘city_2’, ‘value’ => array(‘NY’,’LA’), ‘compare’ => ‘IN’ ) ) ); query_posts($args);