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 :(

Solution 1

Make sure you have the "universe" repository enabled for apt-get:

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

Solution 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

Comments

[Nico Haase]

So, what about installing the packages in question? What exactly is the problem with that?

[Bùi Ngọc Minh]

I ran composer install in laravel project and it showed error: the requested PHP extension mbstring is missing from your system. @NicoHaase

[Nico Haase]

On which architecture do you use your system? According to packages.ubuntu.com/bionic/php7.2-mbstring, the extension depends on 7.2.7 for amd64 and i386, while other architectures only provide 7.2.3 so far...

[Micheal Shallop]

php 7.2.7 on a clean 18.04 install (apt install php) -- attempting to install mbstring fails with unable-to-locate error. Confirmed that it was listed as a package... if a dependency was missing, you'd get a completely different error...