宝塔面板，升级fecmall使用composer update报错：PHP Warning: putenv() has been disabled for security reasons in phar:///usr/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 160
详细报错信息：
composer update
PHP Warning: putenv() has been disabled for security reasons in phar:///usr/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 160
Warning: putenv() has been disabled for security reasons in phar:///usr/bin/composer/vendor/composer/xdebug-handler/src/Process.php on line 160
PHP Warning: putenv() has been disabled for security reasons in phar:///usr/bin/composer/bin/composer on line 57
Warning: putenv() has been disabled for security reasons in phar:///usr/bin/composer/bin/composer on line 57
Warning: This development build of composer is over 60 days old. It is recommended to update it by running "/usr/bin/composer self-update" to get the latest version.
[ErrorException]
putenv() has been disabled for security reasons
update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [--with-dependencies] [--with-all-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [-i|--interactive] [--root-reqs] [--] [<packages>]...
进入软件商店，找到已经安装的php，点击设置，
在禁用函数栏目中将putenv 删除掉
然后重启php即可