composer.phar安装不成功怎么办？

[weixin_38053353]

root@iZ23totsse9Z:/alidata/www/customization-with-ayiy# php composer.phar install Loading composer repositories with package information Installing dependencies (including require-dev) Killed 直接就kill了，composer.json是合法的，vender目录没有出现，怎么回事呢？