Ubuntu 16.04 - Install PHP SSH2 Extension
Installing PHP with the SSH2 extension for PHP 7.0 in Ubuntu 16.04 is as easy as:
sudo apt-get install php7.0-cli -y sudo apt-get install libssh2-1 php-ssh2 -y
No need to install through PECL.
You can do the following to perform a quick test to check that SSH2 support has been added:
php -a php > $result = ssh2_connect('localhost'); php > var_dump($result); resource(2) of type (SSH2 Session)