meta_array_arguments.php

function wingz_exhibitor_filter(){
	global $wp_query;
	$tax_query = array( 'relation' => 'AND' );
	if ( isset( $_GET['s'] ) ):
		$search = sanitize_text_field( $_GET['s'] );
	else:
		$search = '';
	endif;

	if ( isset( $_GET['exhibitor_type'] ) && $_GET['exhibitor_type'] != '' ):
		$exhibitor_type = sanitize_text_field( $_GET['exhibitor_type'] );
		$tax_query[] = array(
			'taxonomy' => 'exhibitor_type',
			'field'    => 'term_id',
			'terms'    => $exhibitor_type,
		);
	endif;

	if ( isset( $_GET['exhibitor_category'] ) && $_GET['exhibitor_category'] != '' ):
		$exhibitor_category = sanitize_text_field( $_GET['exhibitor_category'] );
		$tax_query[] = array(
			'taxonomy' => 'exhibitor_category',
			'field'    => 'term_id',
			'terms'    => $exhibitor_category,
		);
	endif;

	if ( isset( $_GET['exhibitor_country'] ) && $_GET['exhibitor_country'] != '' ):
		$exhibitor_country = sanitize_text_field( $_GET['exhibitor_country'] );
		$tax_query[] = array(
			'taxonomy' => 'exhibitor_country',
			'field'    => 'term_id',
			'terms'    => $exhibitor_country,
		);
	endif;

	if ( isset( $_GET['exhibitor_designstyle'] ) && $_GET['exhibitor_designstyle'] != '' ):
		$exhibitor_designstyle = sanitize_text_field( $_GET['exhibitor_designstyle'] );
		$tax_query[] = array(
			'taxonomy' => 'exhibitor_designstyle',
			'field'    => 'term_id',
			'terms'    => $exhibitor_designstyle,
		);
	endif;

	$args = array(
		's'                 => $search,
		'posts_per_page'    => -1,
		'post_type'         => 'exhibitor',
		'tax_query'         => $tax_query,
		'meta_key'          => '_wingz-ad-priority',
		'orderby'           => array( 'meta_value_num' => 'DESC', 'title' => 'ASC' ),
	);
	$wp_query = new WP_Query( $args );

	get_template_part( 'loop', 'exhibitor' );

	wp_reset_postdata();

	exit();

}