Ok so i have set up a new symfony3 project using :
Vagrant----Virtualbox----PHP56----MYSQL55----UBUNTUTRUSTY64.
Everything was working correctly until i make a "composer update". I have this error message and i cannot do anything now
Attempted to load class "DOMDocument" from the global namespace
So i found some proposed solution like "install php-xml" but it is already installed with newest version.
Does anyone have a solution or guide me to the right direction to find one
Many thanks
Nico
Had the same issue with PHP 7.0.9, this worked:
sudo apt-get install php7.0-xml
You need to install the php-xml for your php version.
If you have php 5.6. you need to install php5.6-xml. It seems the newest version does not work for older versions.
sudo apt-get install php5.6-xml
sudo service apache2 restart
even sudo apt-get install php-xml works. it takes the current version.