EDD Custom Fields Code

<?php
/*
Plugin Name: Easy Digital Downloads Custom Fields
Plugin URI: http://www.netthrilldesigns.com
Description: Custom fields added for Easy Digital Downloads
Version: 1.0
Author: netTHRILLdesigns
Author URI: http://www.netthrilldesigns.com
License: Proprietary
*/

// output our custom field HTML
function tcwf_edd_custom_checkout_fields() {
    ?>
    <p>
        <label class="edd-label" for="edd-phone"><?php _e('Phone Number', 'edd'); ?></label>
        <input class="edd-input required" type="text" name="edd_phone" id="edd-phone" placeholder="<?php _e('Phone Number', 'edd'); ?>" value=""/>
    </p>
    <p>
        <label class="edd-label" for="edd-company"><?php _e('Company Name', 'edd'); ?></label>
        <input class="edd-input required" type="text" name="edd_company" id="edd-company" placeholder="<?php _e('Company Name', 'edd'); ?>" value=""/>
    </p>
    <p>
        <label class="edd-label" for="edd-address"><?php _e('Address', 'edd'); ?></label>
        <input class="edd-input required" type="text" name="edd_address" id="edd-address" placeholder="<?php _e('Shipping Address', 'edd'); ?>" value=""/>
    </p>
    <?php
}
add_action('edd_purchase_form_user_info', 'tcwf_edd_custom_checkout_fields');

 check for errors with out custom fields
 function tcwf_edd_validate_custom_fields($data) {
    if(!isset($data['edd_phone']) || $data['edd_phone'] == '') {
        // check for a phone number
        edd_set_error( 'invalid_phone', __('You must provide your phone number.', 'tcwf_edd') );
    }
    if(!isset($data['edd_company']) || $data['edd_company'] == '') {
        // check for a valid company name
        edd_set_error( 'invalid_company', __('You must provide a valid company name.', 'tcwf_edd') );
    }
    if(!isset($data['edd_address']) || $data['edd_address'] == '') {
        // check for a valid address
        edd_set_error( 'invalid_address', __('You must provide a valid shipping address.', 'tcwf_edd') );
    }
 }
 add_action('edd_checkout_error_checks', 'tcwf_edd_validate_custom_fields');

// store the custom field data in the payment meta
function tcwf_edd_store_custom_fields($payment_meta) {
    $payment_meta['phone'] = isset($_POST['edd_phone']) ? $_POST['edd_phone'] : '';
    $payment_meta['company'] = isset($_POST['edd_company']) ? $_POST['edd_company'] : '';
    $payment_meta['address'] = isset($_POST['edd_address']) ? $_POST['edd_address'] : '';
    return $payment_meta;
}
add_filter('edd_payment_meta', 'tcwf_edd_store_custom_fields');

// show the custom fields in the "View Order Details" popup
function tcwf_edd_purchase_details($payment_meta, $user_info) {
    $phone = isset($payment_meta['phone']) ? $payment_meta['phone'] : 'none';
    $company = isset($payment_meta['company']) ? $payment_meta['company'] : 'none';
    $address = isset($payment_meta['address']) ? $payment_meta['address'] : 'none';
    ?>
    <li><?php echo __('Phone:', 'tcwf') . ' ' . $phone; ?></li>
    <li><?php echo __('Company:', 'tcwf') . ' ' . $company; ?></li>
    <li><?php echo __('Shipping Address:', 'tcwf') . ' ' . $address; ?></li>
    <?php
}
add_action('edd_payment_personal_details_list', 'tcwf_edd_purchase_details', 10, 2);

?>