Import WordPress users from CSV text

function ccom_import_users_from_csv() {

	$csv = '';

	// Process Data
	$data = explode( "\n", $csv );
	foreach( $data as $row ) {

		list(
			$billing_company,
			$billing_first_name,
			$billing_last_name,
			$billing_phone,
			$user_email,
			$billing_address,
			$shipping_address
		) = str_getcsv( trim( $row ) );
		list( $billing_address_1, $billing_city, $billing_state, $billing_postcode )
			= explode( ', ', $billing_address );
		list( $shipping_address_1, $shipping_city, $shipping_state, $shipping_postcode )
			= explode( ', ', $shipping_address );
		$user_name = substr( $user_email, 0, strpos( $user_email, '@' ) );
		$user_password = wp_generate_password( 12, false );

		// Create Or Update User
		$user_id = '';
		$user_id = username_exists( $user_name );

		if( ! $user_id ) {
			$user_id = wp_create_user( $user_name, $user_password, $user_email );
		}

		if( $user_id && ! is_wp_error( $user_id ) ) {
			update_user_meta( $user_id, 'first_name', $billing_first_name );
			update_user_meta( $user_id, 'last_name', $billing_last_name );
			update_user_meta( $user_id, 'billing_first_name', $billing_first_name );
			update_user_meta( $user_id, 'billing_last_name', $billing_last_name );
			update_user_meta( $user_id, 'billing_phone', $billing_phone );
			update_user_meta( $user_id, 'billing_company', $billing_company );
			update_user_meta( $user_id, 'billing_address_1', $billing_address_1 );
			update_user_meta( $user_id, 'billing_city', $billing_city );
			update_user_meta( $user_id, 'billing_state', $billing_state );
			update_user_meta( $user_id, 'billing_postcode', $billing_postcode );
			update_user_meta( $user_id, 'shipping_address_1', $shipping_address_1 );
			update_user_meta( $user_id, 'shipping_city', $shipping_city );
			update_user_meta( $user_id, 'shipping_state', $shipping_state );
			update_user_meta( $user_id, 'shipping_postcode', $shipping_postcode );
		}

	}

}