Add Custom Tab for WooCommerce w/Custom Fields

Example 1

// Add custom Data Sheets tab for WooCommerce 
add_filter( 'woocommerce_product_tabs', 'add_data_sheets_product_tab' );
function add_data_sheets_product_tab( $tabs ) {
  // ensure ACF is available
  if ( !function_exists( 'get_field' ) )
    return;
    $tabs[] = array(
      'title' => 'Data Sheets',
      'priority' => 30,
      'callback' => 'add_tab_product_data_sheets'
    );
  return $tabs;
}

// Add data for custom Data Sheets tab for WooCommerce 
function add_tab_product_data_sheets( $tabs ) {
global $post;
    $before_content = sprintf( '<div class="product-custom-fields"><div class="data-sheets">' );
if ( have_rows( 'supporting_documents' ) ):
      
      while ( have_rows( 'supporting_documents' ) ): the_row();
       $single_product_data_sheet_title = get_sub_field( 'file_title' );
       $single_product_data_sheet = get_sub_field( 'upload_file' );
       //$content .= '<p class="product-specs"><strong>Data Sheet: </strong>';
       $content .= '<img src="/wp-content/uploads/2021/11/pdf-icon.png"> ';
       $content .= sprintf( '<a class="product-datasheet-title" href="%s" target="_blank">%s</a>', esc_url(get_sub_field('upload_file')), esc_html(get_sub_field('file_title')));
       $content .= '</p>';
      
      endwhile;
    $content .= sprintf( '</div>' );
endif;
    if( $content ) {
        echo $before_content . $content;
    } else {
	    echo 'There are no specifications for this product.';
    }
}

Example 2

// Add custom Specifications tab for WooCommerce 
add_filter( 'woocommerce_product_tabs', 'add_specifications_product_tab' );
function add_specifications_product_tab( $tabs ) {
  // ensure ACF is available
  if ( !function_exists( 'get_field' ) )
    return;
    $tabs[] = array(
      'title' => 'Specifications',
      'priority' => 25,
      'callback' => 'add_tab_product_specifications'
    );
  return $tabs;
}

// Add data for custom Specifications tab for WooCommerce 
function add_tab_product_specifications() {
    global $post;
    $before_content = sprintf( '<div class="product-custom-fields"><div class="product-specs table-1"><table><tbody>' );
    $max_gpm_terms = get_the_terms( $post->ID , 'max_gpm' );
    $max_gpm = [];
    foreach ( $max_gpm_terms as $max_gpm_term ) {
        $max_gpm_list[] = esc_html($max_gpm_term->name );
    }
    $max_gpm = implode( ', ', $max_gpm_list );
    if( $max_gpm ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name max-gpm"><a href="#" class="max-gpm">Max GPM</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $max_gpm );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $max_psi_terms = get_the_terms( $post->ID , 'max_psi' );
    $max_psi = [];
    foreach ( $max_psi_terms as $max_psi_term ) {
        $max_psi_list[] = esc_html($max_psi_term->name );
    }
    $max_psi = implode( ', ', $max_psi_list );
    if( $max_psi ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name max-psi"><a href="#" class="max-psi">Max PSI</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $max_psi );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $max_temp_terms = get_the_terms( $post->ID , 'max_temp' );
    $max_temp = [];
    foreach ( $max_temp_terms as $max_temp_term ) {
        $max_temp_list[] = esc_html($max_temp_term->name );
    }
    $max_temp = implode( ', ', $max_temp_list );
    if( $max_temp ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name max-temp"><a href="#" class="max-temp">Max Temp</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $max_temp );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $solids_handling_size_terms = get_the_terms( $post->ID , 'solids_handling_size' );
    $solids_handling_size = [];
    foreach ( $solids_handling_size_terms as $solids_handling_size_term ) {
        $solids_handling_size_list[] = esc_html($solids_handling_size_term->name );
    }
    $solids_handling_size = implode( ', ', $solids_handling_size_list );
    if( $solids_handling_size ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name max-temp"><a href="#" class="max-temp">Solids Handling Size</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $solids_handling_size );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $center_section_material_terms = get_the_terms( $post->ID , 'center_section_material' );
    $center_section_material = [];
    foreach ( $center_section_material_terms as $center_section_material_term ) {
        $center_section_material_list[] = esc_html($center_section_material_term->name );
    }
    $center_section_material = implode( ', ', $center_section_material_list );
    if( $center_section_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name center-section-material"><a href="#" class="center-section-material">Center Section Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $center_section_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $diaphragm_material_terms = get_the_terms( $post->ID , 'diaphragm_material' );
    $diaphragm_material = [];
    foreach ( $diaphragm_material_terms as $diaphragm_material_term ) {
        $diaphragm_material_list[] = esc_html($diaphragm_material_term->name );
    }
    $diaphragm_material = implode( ', ', $diaphragm_material_list );
    if( $diaphragm_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name diaphragm-material"><a href="#" class="diaphragm-material">Diaphragm Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $diaphragm_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $wetted_parts_material_terms = get_the_terms( $post->ID , 'wetted_parts_material' );
    $wetted_parts_material = [];
    foreach ( $wetted_parts_material_terms as $wetted_parts_material_term ) {
        $wetted_parts_material_list[] = esc_html($wetted_parts_material_term->name );
    }
    $wetted_parts_material = implode( ', ', $wetted_parts_material_list );
    if( $wetted_parts_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name wetted_parts_material"><a href="#" class="wetted_parts_material">Wetted Parts Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $wetted_parts_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $connection_terms = get_the_terms( $post->ID , 'connection' );
    $connection = [];
    foreach ( $connection_terms as $connection_term ) {
        $connection_list[] = esc_html($connection_term->name );
    }
    $connection = implode( ', ', $connection_list );
    if( $connection ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name connection"><a href="#" class="connection">Connections</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $connection );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $seat_material_terms = get_the_terms( $post->ID , 'seat_material' );
    $seat_material = [];
    foreach ( $seat_material_terms as $seat_material_term ) {
        $seat_material_list[] = esc_html($seat_material_term->name );
    }
    $seat_material = implode( ', ', $seat_material_list );
    if( $seat_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name seat_material"><a href="#" class="seat_material">Seat Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $seat_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $ball_material_terms = get_the_terms( $post->ID , 'ball_material' );
    $ball_material = [];
    foreach ( $ball_material_terms as $ball_material_term ) {
        $ball_material_list[] = esc_html($ball_material_term->name );
    }
    $ball_material = implode( ', ', $ball_material_list );
    if( $ball_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name ball_material"><a href="#" class="ball_material">Ball Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $ball_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $hardware_material_terms = get_the_terms( $post->ID , 'hardware_material' );
    $hardware_material = [];
    foreach ( $hardware_material_terms as $hardware_material_term ) {
        $hardware_material_list[] = esc_html($hardware_material_term->name );
    }
    $hardware_material = implode( ', ', $hardware_material_list );
    if( $hardware_material ):
        $content .= sprintf( '<tr>' );
        $content .= sprintf( '<td class="attribute-name hardware_material"><a href="#" class="hardware_material">Hardware Material</a></td>' );
        $content .= sprintf( '<td>' );
        $content .= sprintf( $hardware_material );
        $content .= sprintf( '</td>' );
        $content .= sprintf( '</tr>' );
    endif;
    $after_content .= sprintf( '</tbody></table></div></div>' );
    if( $content ) {
        echo $before_content . $content . $after_content;
    } else {
	    echo 'There are no specifications for this product.';
    }
}