On Windows, for PHP versions 5.3 and newer, the mysqli extension is enabled and uses the MySQL Native Driver by default. This means you don't need to worry about configuring access to libmysql.dll. Php Mysqli Extension Is Missing Windows. For PHP 5 under Windows 7 follow this walkthrough. If you installed PHP 5 under IIS 7 as described here.
I have a problem with phpmyadmin on ubuntu 16.04 after upgrading php 5.6 to php 7 by this way: sudo add-apt-repository ppa:ondrej/php sudo apt-get update sudo apt-get install php7.0 php5.6 php5. Acpi Ifx0102 Driver Hp 2015dj1348. 6-mysql php-gettext php5.6-mbstring php-mbstring php7.0-mbstring php-xdebug libapache2-mod-php5.6 libapache2-mod-php7.0 after this command: sudo a2dismod php5.6; sudo a2enmod php7.0; sudo service apache2 restart phpMyadmin has error: The mysqli extension is missing. You Cannot Serialize Or Unserialize Pdo Instances Cakephp. Please check your PHP configuration. But it does not have error on php5.