problem 1
- Installation request for laravel/framework v5.3.18 -> satisfiable by laravel/framework[v5.3.18].
- laravel/framework v5.3.18 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
Problem 2
- Installation request for phpunit/phpunit 5.6.1 -> satisfiable by phpunit/phpunit[5.6.1].
- phpunit/phpunit 5.6.1 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system.
要启用扩展程序,请验证它们是否已在这些.ini文件中启用: - /etc/php/7.0/cli/php.ini - /etc/php/7.0/cli/conf.d/10-opcache.ini - /etc/php/7.0/cli/conf.d/10-pdo.ini - /etc/php/7.0/cli/conf.d/15-xml.ini - /etc/php/7.0/cli/conf.d/20-calendar.ini
答案 0 :(得分:2)
您的php没有安装mbstring
。
如果您可以访问服务器,并且它是Linux服务器,则可以使用
进行安装 sudo apt-get install php-mbstring
希望我能提供帮助。