您的系统中缺少请求的 PHP 扩展 dom

The requested PHP extension dom is missing from your system(您的系统中缺少请求的 PHP 扩展 dom)

问题描述

So I just installed Scotchbox (a vagrant setup). https://github.com/scotch-io/scotch-box

I'm trying to install a composer dependancy when I get the following error.

Problem 1
- phpunit/php-code-coverage 4.0.8 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/php-code-coverage 4.0.8 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- phpunit/php-code-coverage 4.0.8 requires ext-dom * -> the requested PHP extension dom is missing from your system.
- Installation request for phpunit/php-code-coverage (locked at 4.0.8) -> satisfiable by phpunit/php-code-coverage[4.0.8].

What I've tried

Some other thread suggested that this is included in the php-xml package. I tried installing this doing

sudo apt-get install php7.0-xml
sudo service apache2 restart

But that didn't work. Any idea what other solutions might work? I'm starting to pull my hair out.

For me the selected answer didn't work.

This did work:

sudo apt-get install php-xml

This was on Ubuntu 16.04 with PHP 7.

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