ACF Testimonial Block

functions.php

/**
 * Testimonial Block
 */
function register_acf_block_types() {

    // register a testimonial block.
    acf_register_block_type(array(
        'name'              => 'testimonial',
        'title'             => __('Testimonial'),
        'description'       => __('A custom testimonial block.'),
        'render_template'   => 'template-parts/blocks/testimonial/testimonial.php',
        'category'          => 'formatting',
        'icon'              => 'admin-comments',
        'keywords'          => array( 'testimonial', 'quote' ),
    ));
}

// Check if function exists and hook into setup.
if( function_exists('acf_register_block_type') ) {
    add_action('acf/init', 'register_acf_block_types');
}

style.css

.testimonial {display: flex; margin: 0; padding: 0;}
.testimonial-image {width: 100%; max-width: 500px; height: 500px;}
.testimonial-author {display: block;}
.testimonial-role {font-style: italic; font-size: 80%;}

testimonial.php

<?php
/**
 * Testimonial Block Template.
 *
 * @param   array $block The block settings and attributes.
 * @param   string $content The block inner HTML (empty).
 * @param   bool $is_preview True during AJAX preview.
 * @param   (int|string) $post_id The post ID this block is saved to.
 */
// Create id attribute allowing for custom "anchor" value.
$id = 'testimonial-' . $block['id'];
if( !empty($block['anchor']) ) {
    $id = $block['anchor'];
}
// Create class attribute allowing for custom "className" and "align" values.
$className = 'testimonial';
if( !empty($block['className']) ) {
    $className .= ' ' . $block['className'];
}
if( !empty($block['align']) ) {
    $className .= ' align' . $block['align'];
}
// Load values (field data)
$text = get_field('testimonial');
$author = get_field('author');
$role = get_field('role');
$image = get_field('image');
$background_color = get_field('background_color');
$text_color = get_field('text_color');

?>
<div id="<?php echo esc_attr($id); ?>" class="<?php echo esc_attr($className); ?>">
    <blockquote class="testimonial-blockquote">
        <span class="testimonial-text"><?php echo $text; ?></span>
        <span class="testimonial-author"><?php echo $author; ?></span>
        <span class="testimonial-role"><?php echo $role; ?></span>
    </blockquote>
    <div class="testimonial-image">
        <?php echo wp_get_attachment_image( $image, 'full' ); ?>
    </div>
    <style type="text/css">
        #<?php echo $id; ?> {
            background: <?php echo $background_color; ?>;
            color: <?php echo $text_color; ?>;
        }
    </style>
</div>