Phpmyadmin 收到错误“缺少 mysqli 扩展。”但是当尝试安装它时转到：
sudo apt-get install php5.6-mysqli
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'php5.6-mysql' instead of 'php5.6-mysqli'
php5.6-mysql is already the newest version (5.6.32-1+ubuntu16.04.1+deb.sury.org+1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.