Sort

<?php
/*
Template Name: All Properties
*/
?>
<?php get_header(); ?>

<div class="container fix">

    <div id="page-title">
        <h1><?php echo wpb_page_title(); ?></h1>
    </div><!--/page-title-->

    <div id="content">
        <article id="entry-<?php the_ID(); ?>" <?php post_class('entry fix'); ?>>
            <div class="pad">
                <div class="text">

<form method="post" id="order">
  <select name="sort" onchange='this.form.submit()'>
    <option value="">Sort by</option>
    <option value="zip">Sort by Zip Code</option>
    <option value="type">Sort by Property Type</option>
  </select>
</form>

<?php
if(isset($_REQUEST['sort'])) {
if($_REQUEST['sort'] == 'zip' )
    $order = array(
    'cat' => 30,
    'meta_key' => 'zip_code',
    'orderby' => 'meta_value',
    'order' => 'ASC',
    'paged' => $paged
);

else if($_REQUEST['sort'] == 'type' )
    $order = array(
    'cat' => 30,
    'meta_key' => 'property_type',
    'orderby' => 'meta_value',
    'order' => 'ASC',
    'paged' => $paged
);

}

else
    $order = array(
    'cat' => 30,
    'orderby' => 'title',
    'order' => 'ASC',
    'paged' => $paged
);

$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;

$my_query = new WP_Query($order);

while($my_query->have_posts()) : $my_query->the_post();

?>

                    <div id="listing">
                        <div class="name"><a href="<?php the_permalink(); ?>" title="<?php the_field('property_name'); ?>"><?php the_field('property_name'); ?></a></div>

                        <div class="left">
                        <?php $image = get_field('gallery'); if ($image) { echo '<img src="'.$image[0]['url'].'" />'; } ?>
                        </div>

                        <div class="right">
                            <div class="address"><?php the_field('street_address'); ?><br /><?php the_field('city'); ?>, <?php the_field('state'); ?> <?php the_field('zip_code'); ?></div>
                            <div class="details"><a href="<?php the_permalink(); ?>" title="<?php the_field('property_name'); ?>">View Details</a></div>
                            <div class="clear"></div>

                            <?php if(get_field('listing_type') == "For Sale"): ?>
                            <div class="four-col"><strong>Listing Type</strong></div>
                            <div class="four-col"><strong>Property Type</strong></div>
                            <?php if(get_field('property_type') == "Land"): ?>
                            <div class="four-col"><strong>Lot Size</strong></div>
                            <?php else: ?>
                            <div class="four-col"><strong>Building Size</strong></div>
                            <?php endif; ?>
                            <div class="four-col"><strong>Price</strong></div>
                            <div class="clear"></div>

                            <div class="line"></div>

                            <div class="four-col"><?php the_field('listing_type'); ?></div>
                            <div class="four-col"><?php the_field('property_type'); ?></div>
                            <?php if(get_field('property_type') == "Land"): ?>
                            <div class="four-col">
                            <?php the_field('total_lot_size'); ?>
                            </div>
                            <?php else: ?>
                            <div class="four-col">
                            <?php the_field('total_building_size'); ?> SF
                            </div>
                            <?php endif; ?>
                            <div class="four-col">$<?php the_field('price'); ?></div>
                            <div class="clear"></div>
                            <?php else: ?>
                            <?php endif; ?>

                            <?php if(get_field('listing_type') == "For Lease"): ?>
                            <div class="four-col"><strong>Listing Type</strong></div>
                            <div class="four-col"><strong>Property Type</strong></div>
                            <div class="four-col"><strong>Avail SF</strong></div>
                            <div class="four-col"><strong>Rental Rate</strong></div>
                            <div class="clear"></div>

                            <div class="line"></div>

                            <div class="four-col"><?php the_field('listing_type'); ?></div>
                            <div class="four-col"><?php the_field('property_type'); ?></div>
                            <div class="four-col"><?php the_field('total_space_available'); ?> SF</div>
                            <div class="four-col">$<?php the_field('rental_rate'); ?>/SF</div>
                            <div class="clear"></div>
                            <?php else: ?>
                            <?php endif; ?>

                        </div>
                        <div class="clear"></div>

                    </div>

<?php endwhile; ?>

<?php wp_pagenavi( array( 'query' => $my_query ) ); wp_reset_postdata(); ?>

                </div>
            </div>
        </article>
    </div>
</div><!--/container-->

<?php get_footer(); ?>