Add Extra WooCommerce Registration Fields #woocommerce

woocommerce-extra-registration-fields.php

<?php

/**
 * Add new register fields for WooCommerce registration.
 */
function yanco_woocommerce_extra_register_fields() {
    ?>

    <p class="form-row form-row-first">
    <label for="reg_billing_first_name"><?php _e( 'First name', 'woocommerce' ); ?> <span class="required">*</span></label>
    <input type="text" class="input-text" name="billing_first_name" id="reg_billing_first_name" value="<?php if ( ! empty( $_POST['billing_first_name'] ) ) esc_attr_e( $_POST['billing_first_name'] ); ?>" />
    </p>

    <p class="form-row form-row-last">
    <label for="reg_billing_last_name"><?php _e( 'Last name', 'woocommerce' ); ?> <span class="required">*</span></label>
    <input type="text" class="input-text" name="billing_last_name" id="reg_billing_last_name" value="<?php if ( ! empty( $_POST['billing_last_name'] ) ) esc_attr_e( $_POST['billing_last_name'] ); ?>" />
    </p>

    <p class="form-row form-row-wide">
    <label for="reg_billing_address_1"><?php _e( 'Adresse', 'woocommerce' ); ?></label>
    <input type="text" class="input-text" name="billing_address_1" id="reg_billing_address_1" value="<?php if ( ! empty( $_POST['billing_address_1'] ) ) esc_attr_e( $_POST['billing_address_1'] ); ?>" />
    </p>

    <p class="form-row form-row-wide">
    <label for="reg_billing_address_2"><?php _e( 'Addresslinje 2', 'woocommerce' ); ?></label>
    <input type="text" class="input-text" name="billing_address_2" id="reg_billing_address_2" value="<?php if ( ! empty( $_POST['billing_address_2'] ) ) esc_attr_e( $_POST['billing_address_2'] ); ?>" />
    </p>

    <p class="form-row form-row-first">
    <label for="reg_billing_postcode"><?php _e( 'Postnummer', 'woocommerce' ); ?></label>
    <input type="text" class="input-text" name="billing_postcode" id="reg_billing_postcode" value="<?php if ( ! empty( $_POST['billing_postcode'] ) ) esc_attr_e( $_POST['billing_postcode'] ); ?>" />
    </p>

    <p class="form-row form-row-last">
    <label for="reg_billing_city"><?php _e( 'By', 'woocommerce' ); ?></label>
    <input type="text" class="input-text" name="billing_city" id="reg_billing_city" value="<?php if ( ! empty( $_POST['billing_city'] ) ) esc_attr_e( $_POST['billing_city'] ); ?>" />
    </p>

    <p class="form-row form-row-wide">
    <label for="reg_billing_phone"><?php _e( 'Phone', 'woocommerce' ); ?></label>
    <input type="text" class="input-text" name="billing_phone" id="reg_billing_phone" value="<?php if ( ! empty( $_POST['billing_phone'] ) ) esc_attr_e( $_POST['billing_phone'] ); ?>" />
    </p>

    <?php
}
add_action( 'woocommerce_register_form_start', 'yanco_woocommerce_extra_register_fields' );

/**
 * Validate the extra register fields.
 *
 * @param WP_Error $validation_errors Errors.
 * @param string   $username          Current username.
 * @param string   $email             Current email.
 */
function yanco_woocommerce_validate_extra_register_fields( $validation_errors, $username, $email ) {
    if ( isset( $_POST['billing_first_name'] ) && empty( $_POST['billing_first_name'] ) ) {
        $validation_errors->add( 'billing_first_name_error', __( '<strong>Error</strong>: First name is required!', 'woocommerce' ) );
    }
    if ( isset( $_POST['billing_last_name'] ) && empty( $_POST['billing_last_name'] ) ) {
        $validation_errors->add( 'billing_last_name_error', __( '<strong>Error</strong>: Last name is required!.', 'woocommerce' ) );
    }
    
    return $validation_errors;
}
add_filter( 'woocommerce_registration_errors', 'yanco_woocommerce_validate_extra_register_fields', 10, 3 );

/**
 * Save the extra register fields.
 *
 * @param int $customer_id Current customer ID.
 */
function yanco_woocommerce_save_extra_register_fields( $customer_id ) {
    if ( isset( $_POST['billing_first_name'] ) ) {
        update_user_meta( $customer_id, 'first_name', sanitize_text_field( $_POST['billing_first_name'] ) );
        update_user_meta( $customer_id, 'billing_first_name', sanitize_text_field( $_POST['billing_first_name'] ) );
    }
    
    if ( isset( $_POST['billing_last_name'] ) ) {
        update_user_meta( $customer_id, 'last_name', sanitize_text_field( $_POST['billing_last_name'] ) );
        update_user_meta( $customer_id, 'billing_last_name', sanitize_text_field( $_POST['billing_last_name'] ) );
    }
    
    if ( isset( $_POST['billing_address_1'] ) ) {
        update_user_meta( $customer_id, 'billing_address_1', sanitize_text_field( $_POST['billing_address_1'] ) );
    }

    if ( isset( $_POST['billing_address_2'] ) ) {
        update_user_meta( $customer_id, 'billing_address_2', sanitize_text_field( $_POST['billing_address_2'] ) );
    }

    if ( isset( $_POST['billing_postcode'] ) ) {
        update_user_meta( $customer_id, 'billing_postcode', sanitize_text_field( $_POST['billing_postcode'] ) );
    }

    if ( isset( $_POST['billing_city'] ) ) {
        update_user_meta( $customer_id, 'billing_city', sanitize_text_field( $_POST['billing_city'] ) );
    }

    if ( isset( $_POST['billing_phone'] ) ) {
        update_user_meta( $customer_id, 'billing_phone', sanitize_text_field( $_POST['billing_phone'] ) );
    }
}
add_action( 'woocommerce_created_customer', 'yanco_woocommerce_save_extra_register_fields' );