laravel composer update : the requested PHP extension dom is missing from your system

Question

I am using ubuntu 16.04, laravel 5.2 when i run update composer in my project directory its showing "the requested PHP extension dom is missing from your system" i checked installed packages of PHP, its available there

Answer 1

Installing xml-extension (php7.0-xml in my case) solved the problem

sudo apt-get install php-xml

Answer 2

If PHP version is 7.2, execute the following command

sudo apt-get install php7.2-xml

Answer 3

Managed to fix it with a php version 5.6* :

$ sudo apt-get update
$ sudo apt-get install php5.6-xml

Answer 4

DOM is a PHP extension and not a PHP package. This means that your version of PHP needs to be recompiled with the extension. It is possible however that your PHP was already compiled with DOM but that DOM is not enabled. You can check this in your php.ini (search for extension=dom.so and make sure it's uncommented).

Answer 5

You might have some missing dependencies, so first run

sudo apt-get -f install

Then install php-xml

sudo apt-get install php-xml

This worked for me.

Answer 6

In my case I use

sudo apt-get update

and

sudo apt-get install php7.3-xml