How to sort multiple wordpress custom field values?

Question

Display posts with \'Product\' type ordered by \'Price\' custom field:

$query = new WP_Query( 
                      array ( \'post_type\' => \'product\', 
          


        

Answer 1

Thanks to Bainternet I found the solution:

function orderbyreplace($orderby) {
    return str_replace('menu_order', 'mt1.meta_value, mt2.meta_value', $orderby);
}

and...

$args = array(
  'post_type'=>'Events',
  'orderby' => 'menu_order',
  'order' => 'ASC',
  'meta_query' => array(
        array(
            'key' => 'Start_Hour',
            'value' => '',
            'compare' => 'LIKE'
        ),
        array(
            'key' => 'Start_Minute',
            'value' => '',
            'compare' => 'LIKE'
        )
    )
);

add_filter('posts_orderby','orderbyreplace');
$loop = new WP_Query( $args );
remove_filter('posts_orderby','orderbyreplace');