我正在尝试执行 composer install ... ，但出现 requires ext-mbstring * -> the requested PHP extension mbstring is missing from your system. 错误我正在使用 Apache (Cpanel) 和 PHP 5.6。
以下是我尝试修复错误的方法。
1:yum search mbstring
============================================= N/S matched: mbstring =============================================
ea-php54-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
ea-php55-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
ea-php56-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
ea-php70-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
ea-php71-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
ea-php72-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
rh-php56-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
rh-php70-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
rh-php71-php-mbstring.x86_64 : A module for PHP applications which need multi-byte string handling
2:
yum install ea-php56-php-mbstring.x86_64Loaded plugins: fastestmirror, universal-hooks
Loading mirror speeds from cached hostfile
* EA4: 110.4.45.120
* cpanel-addons-production-feed: 110.4.45.120
* base: ftp.cuhk.edu.hk
* centosplus: ftp.cuhk.edu.hk
* epel: ftp.cuhk.edu.hk
* extras: ftp.cuhk.edu.hk
* ius: hkg.mirror.rackspace.com
* updates: ftp.cuhk.edu.hk
Package ea-php56-php-mbstring-5.6.35-1.1.5.cpanel.x86_64 already installed and latest version
Nothing to do
似乎 mbstring 已安装，但为什么在尝试 Composer 安装时出现错误？
另一种方式(在cPanel中更新PHP版本)
1:WHM - 已经设置为 7.1
2:cPanel - 已经设置为 7.1
但是服务器中的版本仍然是 5.6
有什么建议可以解决
require ext-mbstring 错误？ 最佳答案
尝试使用 aptitude 安装 mbstring php 库。
sudo apt-get install php-mbstring php7.1-mbstring
关于php - Composer 安装 - 需要 ext-mbstring，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/49977589/