Carousels are a popular way to display content on a website, and testimonials are a great way to show off what your customers are saying about your products or services. In this tutorial, we’ll show you how to build a testimonial carousel plugin for WordPress.

Testimonials are a great way to show off what your customers are saying about your products or services. In this tutorial, we’ll show you how to build a testimonial carousel plugin for WordPress.

A carousel is a rotating set of images, usually three or more, with each image linked to a different page or product. Carousels are a popular way to display content on a website, and testimonials are a great way to show off what your customers are saying about your products or services.

In this tutorial, we’ll show you how to build a testimonial carousel plugin for WordPress. We’ll be using the Bootstrap carousel component to create the carousel, and we’ll be using the WP_Query class to fetch the testimonials from the WordPress database.

The first thing you need to do is create a new file in your WordPress plugin directory. Call it wp-testimonial-carousel.php and add the following code to it:

<?php
/*
Plugin Name: WP Testimonial Carousel
Plugin URI: https://example.com/wp-testimonial-carousel
Description: A carousel of testimonials
Version: 1.0
Author: John Doe
Author URI: https://example.com
License: GPLv2 or later
*/

This is the plugin header. It's required by WordPress. The only thing you need to change here is the Plugin Name, Plugin URI, and Description.

Next, we need to write the code for the carousel. Add the following code to the wp-testimonial-carousel.php file:

‘testimonial’,
‘posts_per_page’ => 3,
);
$query = new WP_Query( $args );

if ( $query->have_posts() ) :

$output = ‘

‘;

endif;

wp_reset_postdata();

return $output;

}
add_shortcode( ‘testimonial_carousel’, ‘wp_testimonial_carousel’ );
This code does the following:

It defines a function called wp_testimonial_carousel.
It sets up a new WP_Query object to fetch the testimonials from the WordPress database.
It loops through the testimonials and outputs the carousel HTML.
It adds a shortcode called [testimonial_carousel] which can be used to output the carousel anywhere on a WordPress site.

Now that the carousel is complete, we need to add the testimonials. Testimonials are stored in the WordPress database as a custom post type.

To create the custom post type, add the following code to the wp-testimonial-carousel.php file:

_x( ‘Testimonials’, ‘post type general name’ ),
‘singular_name’ => _x( ‘Testimonial’, ‘post type singular name’ ),
‘add_new’ => _x( ‘Add New’, ‘testimonial’ ),
‘add_new_item’ => __( ‘Add New Testimonial’ ),
‘edit_item’ => __( ‘Edit Testimonial’ ),
‘new_item’ => __( ‘New Testimonial’ ),
‘all_items’ => __( ‘All Testimonials’ ),
‘view_item’ => __( ‘View Testimonial’ ),
‘search_items’ => __( ‘Search Testimonials’ ),
‘not_found’ => __( ‘No testimonials found’ ),
‘not_found_in_trash’ => __( ‘No testimonials found in the Trash’ ),
‘parent_item_colon’ => ”,
‘menu_name’ => ‘Testimonials’
);
$args = array(
‘labels’ => $labels,
‘description’ => ‘Holds our testimonials and testimonial specific data’,
‘public’ => true,
‘menu_position’ => 5,
‘supports’ => array( ‘title’, ‘editor’, ‘thumbnail’, ‘excerpt’, ‘comments’ ),
‘has_archive’ => true,
);
register_post_type( ‘testimonial’, $args );

}
add_action( ‘init’, ‘wp_testimonial_carousel_post_type’ );
This code does the following:

It defines a custom post type called testimonial.
It sets up the labels for the custom post type.
It registers the custom post type with WordPress.
It adds an action hook to create the custom post type when WordPress initializes.

Now that the custom post type is set up, we can add the testimonials. Testimonials are added just like any other WordPress post.

Log in to the WordPress admin and go to Testimonials -> Add New. Enter the testimonial content in the editor and click Publish.

Repeat this process for each testimonial you want to add.

You should now have a working testimonial carousel.