title: phpMyAdmin - Error : (The mysqli extension is missing) after upgrading php 5.6 to php 7
body: <p>I have a problem with phpmyadmin on ubuntu 16.04 after upgrading php 5.6 to php 7 by this way:</p>
  
  <pre><code>sudo add-apt-repository ppa:ondrej/php
  
  sudo apt-get update
  
  sudo apt-get install php7.0 php5.6 php5.6-mysql php-gettext php5.6-mbstring php-mbstring php7.0-mbstring php-xdebug libapache2-mod-php5.6 libapache2-mod-php7.0
  </code></pre>
  
  <p>after this command :</p>
  
  <pre><code>sudo a2dismod php5.6 ; sudo a2enmod php7.0 ; sudo service apache2 restart
  </code></pre>
  
  <p>phpMyadmin has error :</p>
  
  <p>The mysqli extension is missing. Please check your PHP configuration. </p>
  
  <p>But it does not have error on php5.</p>
  
  <p>I want use phpMyadmin on php7.</p>
  
  <p>Can anyone help me?</p>