TEST

<?php
function add_extra_portfolio() {
	echo 'Hello World!';
	$images = get_field('hinh_anh_du_an');
	if( $images ):
	?>
    <ul>
        <?php foreach( $images as $image ): ?>
            <li>
                <a href="<?php echo esc_url($image['url']); ?>">
                     <img src="<?php echo esc_url($image['sizes']['thumbnail']); ?>" alt="<?php echo esc_attr($image['alt']); ?>" />
                </a>
                <p><?php echo esc_html($image['caption']); ?></p>
            </li>
        <?php endforeach; ?>
    </ul>
	<?php 
	endif;
}
add_action('flatsome_portfolio_title_after','add_extra_portfolio');
?>