How can I random two fields using get_field? - php

Question

In the code bellow Im displaying one Case using get_field(); on my startpage.
Know I wanna be able to random two fields(), using get_field('promoted_case') and get_field('promoted_case_two'); on the startpage.
When a person updates the webpage Its supposed to random the two fields...
How can I do that in my code?
<?php if ( $case = get_field( 'promoted_case') ) : ?>
<?php $link = get_permalink( $case->ID ); ?>
<section class="content row">
<header class="dotted">
<h2 class="centered uc feat-case-header"><?php _e( 'Featured case', 'vvt' ) ?></h2>
</header>
<article class="promoted_case">
<div class="row case-header">
<div class="twelve columns">
<h2 class="single-case-header"><?php echo esc_html( $case->post_title ); ?></h2>
</div>
</div>
<div class="row case-content">
<div class="columns six push_six">
<div class="frontpage_case_image">
<?php vvt_post_thumbnail( 'contact_images', $case->ID ); ?>
</div>
</div>
<div class="columns six pull_six entry-content">
<?php echo vvt_trim_words( $case->post_content ); ?>
<div class="frontpage_case_btn">
<a class="button" href="<?php echo home_url( '/cases/' ); ?>"><?php _e( 'Show all Cases', 'vvt' ); ?> <i class="icon-arrow-right"></i></a>
</div>
</div>
</div>
</article>
</section>
<?php endif; ?>

Answer 1

$fields = array('promoted_case', 'promoted_case_two');
$field = $fields[rand(0, count($fields) - 1)];
if ( $case = get_field( $field) )