'certificate', // Replace 'certificate' with your custom post type name 'meta_key' => 'unique_identifier', // Replace 'unique_identifier' with the actual meta key storing the unique identifier 'meta_value' => $certificateId, 'posts_per_page' => 1 ); $certificateQuery = new WP_Query($args); // Step 3: Retrieve the certificate data if ($certificateQuery->have_posts()) { while ($certificateQuery->have_posts()) { $certificateQuery->the_post(); // Retrieve the necessary certificate data (e.g., image, details, etc.) $certificateImage = get_the_post_thumbnail(); $certificateDetails = get_field('certificate_details'); // Replace 'certificate_details' with the appropriate field name or key } } // Step 4: Display the certificate if (!empty($certificateImage)) { echo ''; } if (!empty($certificateDetails)) { echo ''; } // Reset the post data wp_reset_postdata(); ?>