code to take a selection of meta fields from a Cpt and present them in a pdf

					<?php
/**
 * Generate a PDF from a custom post type's metadata.
 *
 * @param int $post_id The ID of the post to generate the PDF for.
 * @param array $meta_keys The meta keys to include in the PDF.
 *
 * @return void
 */
function wpturbo_generate_pdf( $post_id, $meta_keys ) {
    // Load the mPDF library.
    require_once( 'mpdf/autoload.php' );

    // Get the post object.
    $post = get_post( $post_id );

    // Get the metadata for the post.
    $metadata = get_post_meta( $post_id );

    // Filter the metadata to only include the specified keys.
    $metadata = array_filter( $metadata, function( $key ) use ( $meta_keys ) {
        return in_array( $key, $meta_keys );
    }, ARRAY_FILTER_USE_KEY );

    // Create an HTML table from the metadata.
    $html = '<table>';

    foreach ( $metadata as $key => $values ) {
        $html .= '<tr><th>' . esc_html( $key ) . '</th><td>' . esc_html( implode( ', ', $values ) ) . '</td></tr>';
    }

    $html .= '</table>';

    // Generate the PDF.
    $mpdf = new MpdfMpdf();
    $mpdf->WriteHTML( $html );
    $mpdf->Output();
}