Cannot install php-mbstring on ubuntu 18.04

Question

I'm using ubuntu 18.04. I'm trying to install mbstring but terminall show error:

php-mbstring : Depends: php7.2-mbstring but it is not going to be installed

So I' trying to install php7.2-mbstring but error again:

php7.2-mbstring : Depends: php7.2-common (= 7.2.3-1ubuntu1) but 7.2.7-0ubuntu0.18.04.2 is to be installed

Sorry for my bad english. Anyone have idea how to fix this :(

Answer 1

确保为 apt-get 启用了“universe”存储库：

sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu $(lsb_release -sc) universe"

Answer 2

Edit the file /etc/apt/sources.list with the next lines:

deb http://archive.ubuntu.com/ubuntu bionic main multiverse restricted universe
deb http://archive.ubuntu.com/ubuntu bionic-security main multiverse restricted universe
deb http://archive.ubuntu.com/ubuntu bionic-updates main multiverse restricted universe

Save and run:

sudo apt update && sudo apt-get upgrade
sudo apt-get install php7.2-mbstring

And it's done

Source: https://askubuntu.com/questions/1064634/unable-to-install-php-mbstring