code.php

<div id="response" class="col-lg-9">
	<div class="row">		
		<?php
			$atuacao = $_GET['atuacao'];
			$categoria = $_GET['categoria'];
			// if(is_array($atuacao)){
			// 		exit('é um array');
			// }
			var_dump($atuacao);
		?>
		<?php if (is_array($atuacao) and ($categoria)) : ?>
			<?php 
				$args = array (
					'post_type' 		=> 'empresa',
					'posts_per_page' 	=> 99,
					'order'				=> 'DESC'
				);
			?>
			<?php if ( $the_query->have_posts() ) : ?>
				<?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
					<div class="col-lg-4">							
						<figure>
							<a href="<?php the_field('site');?>" target="_blank">
								<img src="<?php the_field('marca');?>">
							</a>
								<figcaption><?php the_title();?></figcaption>
						</figure>
					</div>
				<?php endwhile; ?>
				<?php wp_reset_postdata(); ?>
				<?php else : ?>
					<p><?php esc_html_e('Não existe posts nesse momento'); ?></p>
			<?php endif; ?>
		<?php else : ?>
			<?php
				$meta_query = array('relation' => 'OR');
				foreach ($atuacao as $value) {
			  		$meta_query[] = array(
			  			'key' => 'produtos_e_servicos',
			  			'value' => $value,
			  			'compare' => 'LIKE'
			  		);
				}

				foreach ($categoria as $pcat) {
			  		$meta_query[] = array(
			  			'key' => 'categorias',
			  			'value' => $pcat,
			  			'compare' => 'LIKE'
			  		);
				}

				$args = array (
					'post_type' => 'empresa',
					'posts_per_page' => 99,
					'meta_query' => $meta_query
				); 
				
				$the_query = new WP_Query( $args );
			?>
			<?php if ( $the_query->have_posts() ) : ?>
				<?php while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
					<div class="col-lg-4">							
						<figure>
							<a href="<?php the_field('site');?>" target="_blank">
								<img src="<?php the_field('marca');?>">
							</a>
								<figcaption><?php the_title();?></figcaption>
						</figure>
					</div>
				<?php endwhile; ?>
				<?php wp_reset_postdata(); ?>
				<?php else : ?>
					<p><?php esc_html_e( 'Não existe posts nesse momento' ); ?></p>
			<?php endif; ?>
		<?php endif;?>
	</div>
</div>