Getting first and last name to pass at woo commerce user registration

This is the code that I’m using in my functions.php file to add the name fields BTW:

<?php
/**  ----------------------------------------------------------
 * Add new register fields for WooCommerce registration.
 *
 * @return string Register fields HTML.
 *
 * Instructions from here:
 * https://support.woothemes.com/hc/en-us/articles/203182373-How-to-add-custom-fields-in-user-registration-on-the-My-Account-page
 * ----------------------------------------------------------------- */

function wooc_extra_register_fields() {
/* I'm using FNAME as the field name for firstname so that MailChimp receives it  */
	?>
<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="mc4wp-FNAME" id="reg_billing_first_name" value="<?php if ( ! empty( $_POST['mc4wp-FNAME'] ) ) esc_attr_e( $_POST['mc4wp-FNAME'] ); ?>" />
	</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="mc4wp-LNAME" id="reg_billing_last_name" value="<?php if ( ! empty( $_POST['billing_last_name'] ) ) esc_attr_e( $_POST['billing_last_name'] ); ?>" />
	</p>

	<div class="clear"></div>

	<?php
}

add_action( 'woocommerce_register_form_start', 'wooc_extra_register_fields' );

/**
 * Validate the extra register fields.
 *
 * @param  string $username          Current username.
 * @param  string $email             Current email.
 * @param  object $validation_errors WP_Error object.
 *
 * @return void
 */

function wooc_validate_extra_register_fields( $username, $email, $validation_errors ) {
	if ( isset( $_POST['mc4wp-FNAME'] ) && empty( $_POST['mc4wp-FNAME'] ) ) {
		$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' ) );
	}

}

add_action( 'woocommerce_register_post', 'wooc_validate_extra_register_fields', 10, 3 );

/**
 * Save the extra register fields.
 *
 * @param  int  $customer_id Current customer ID.
 *
 * @return void
 */
function wooc_save_extra_register_fields( $customer_id ) {
	if ( isset( $_POST['mc4wp-FNAME'] ) ) {
		// WordPress default first name field.
		update_user_meta( $customer_id, 'first_name', sanitize_text_field( $_POST['mc4wp-FNAME'] ) );

		// WooCommerce billing first name.
		update_user_meta( $customer_id, 'billing_first_name', sanitize_text_field( $_POST['mc4wp-FNAME'] ) );

			// Set default display name.
		update_user_meta( $customer_id, 'nickname', sanitize_text_field( $_POST['mc4wp-FNAME'] ) );
	}

	if ( isset( $_POST['billing_last_name'] ) ) {
		// WordPress default last name field.
		update_user_meta( $customer_id, 'last_name', sanitize_text_field( $_POST['billing_last_name'] ) );

		// WooCommerce billing last name.
		update_user_meta( $customer_id, 'billing_last_name', sanitize_text_field( $_POST['billing_last_name'] ) );
	}
}

add_action( 'woocommerce_created_customer', 'wooc_save_extra_register_fields' );

/*  ---- this code sets the first name as the display name ---- */
add_filter('pre_user_display_name','default_display_name');

function default_display_name($name) {

		  if ( isset( $_POST['mc4wp-FNAME'] ) ) {
		   $name = sanitize_text_field( $_POST['mc4wp-FNAME'] );
}
 return $name;
}
?>

Hi!

Please check out this article in our documentation, it should give you the function you need to have our plugin pass your Woo fields.

Whoops! I gave you the wrong link there. Here is the correct one, apologies!