xamppのphpでsoap

xampp composer soap laravel windows 
php composer.phar install

したら、次のようなエラーが出た。

D:\localhost\project\approot (master -> origin)
λ php composer.phar install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - artisaninweb/laravel-soap 0.3.0.7 requires ext-soap * -> the requested PHP extension soap is missing from your system.
    - artisaninweb/laravel-soap 0.3.0.7 requires ext-soap * -> the requested PHP extension soap is missing from your system.
    - Installation request for artisaninweb/laravel-soap 0.3.0.7 -> satisfiable by artisaninweb/laravel-soap[0.3.0.7].

  To enable extensions, verify that they are enabled in your .ini files:
    - C:\xampp\php\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PHP in CLI mode.

vi C:\xampp\php\php.ini

して、

;extension=soap

のコメントアウト外して、再度composer installしたら通った。
php7.1のphp.iniでは

;extension=php_soap.dll

だった。