shortcode

function carousel_frontend_panel_bgimage($text_slider_testimonial_how_to_bar_title = '',$text_slider_testimonial_how_to_bar_content = '', $text_slider_testimonial_img = '')
{
    global $wpdb, $wp_roles;
    $text_slider_content = '';
    $text_slider_content .= "<div class='text_slider_testimonial' style='background-size: cover; background-image: url('". $text_slider_testimonial_img ."')>";
    $text_slider_content .= '<div class="text_slider_title">';
    $text_slider_content .= $text_slider_testimonial_how_to_bar_title;
    $text_slider_content .= '</div>';
    $text_slider_content .= '</div>';
    $text_slider_content .= "<div class='text_slider_content'>" ;
    $text_slider_content .= $text_slider_testimonial_how_to_bar_content;
    $text_slider_content .= '</div>';
    return $text_slider_content;
}

function carousel_shortcode_large($atts)
{
    global $table_prefix,$wpdb,$post,$theme_dir;
    $post_type_cat = 'text_slider_categories';

    $return_content = '';
    $return_content .= '<div class="text_slider_testimonial_panel_large">';

    $post_type = 'text_slider';
    $sql = $wpdb->prepare( "SELECT ID, post_title, post_content FROM $wpdb->posts WHERE post_type=%s AND post_status='publish' order by post_title ASC",$post_type);

    if ((isset($atts)) && (is_array($atts)) && (count($atts) > 0))
    {
        if (isset($atts['catid']))
        {
            $catid = $atts['catid'];
            $user_args_catid = sanitize_text_field($atts['catid']);
            $user_args_catid_array = explode(",", trim($user_args_catid));

            if ((is_array($user_args_catid_array)) && (count($user_args_catid_array) > 0))
            {

                $user_args_catid_query = implode(',', $user_args_catid_array);

                $sql = "
                SELECT ID, post_title, post_content
                FROM $wpdb->posts wposts
                LEFT JOIN $wpdb->term_relationships ON (wposts.ID = $wpdb->term_relationships.object_id)
                LEFT JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
                WHERE wposts.post_type = '$post_type'
                AND post_status='publish'
                AND $wpdb->term_taxonomy.taxonomy = '$post_type_cat'
                AND $wpdb->term_taxonomy.term_id IN($user_args_catid_query)
                ORDER BY wposts.post_title ASC
                ";

            }
        }
    }

    $results = $wpdb->get_results( $sql );

    if ((!(empty($results))) && (is_array($results)) && (count($results) >0))
    {
        if (isset($atts['catid'])) {
            $catid = $atts['catid'];
        }
        $return_content .= '<div id="carousel-' . $catid . '" class="carousel slide" data-ride="carousel"><div class="carousel-inner">';
        $text_slides = count($results);
        $isFirst = true;
        $i=1;
        foreach ($results as $single)
        {
            $text_slider_testimonial_how_to_bar_title = $single->post_title;
            $text_slider_testimonial_img = get_the_post_thumbnail_url($single->ID);
            echo $text_slider_testimonial_img;
      $original_post = $post;
      $post = get_post($single->ID);
      $text_slider_testimonial_how_to_bar_content = get_the_excerpt($single->ID);
      $post = $original_post;

            $text_slider_testimonial_how_to_bar_content = $single->post_content;

            if($i==1) {
                $return_content .= '<div class="carousel-item active">';
                $return_content .= carousel_frontend_panel_bgimage ( $text_slider_testimonial_how_to_bar_title,$text_slider_testimonial_how_to_bar_content, $text_slider_testimonial_img );
                $return_content .= '</div>';
            } else {
                $return_content .= '<div class="carousel-item">';
                $return_content .= carousel_frontend_panel_bgimage ( $text_slider_testimonial_how_to_bar_title,$text_slider_testimonial_how_to_bar_content, $text_slider_testimonial_img );
                $return_content .= '</div>';
            }
            $i++;
        }
        $return_content .= '</div>';
        $return_content .= '<ol class="carousel-indicators">';
        $controls = '<li data-target="#carousel-' . $catid . '" data-slide-to=0 class="active"><i class="fas fa-circle"></i></li>';
        for ($i = 2; $i <= $text_slides; $i++) {
                $controls .= '<li data-target="#carousel-' . $catid . '" data-slide-to=' . ($i - 1) . '><i class="fas fa-circle"></i></li>';
        }
        $return_content .= $controls;
        $return_content .= '</ol>';
    }

    $return_content .= '</div>';
    $return_content .= '</div>';

    return $return_content;

}