CODE EXAMPLE FOR PHP

wp php get_the_category posts loop

<div class="container body-margin">
  <?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
    <div class="card">
        <div class="row">
            <?php $url = wp_get_attachment_url( get_post_thumbnail_id(get_the_ID()), 'thumbnail' ); ?>
            <img src="<?php echo $url ?>" class="img-responsive card-image" />
        </div>

        <div class="row card-body">
            <?php

            $categories = get_the_category();
            if ( ! empty( $categories ) ) {
                echo '<div><a class="card-body-category" href="' . esc_url( get_category_link( $categories[0]->term_id ) ) . '">' . esc_html( $categories[0]->name ) . '</a></div>';
            }

            ?>
            <div><h4 class="card-body-title"><b><?php the_title(); ?></b></h4></div>
            <div><p class="card-body-date"><?php the_date(); ?></p></div>
        </div>
    </div>
  <?php endwhile; ?>
</div>