Frequently Asked Question
I get this error: PHP Fatal error: Undefined class constant ‘MYSQL_ATTR_INIT_COMMAND’
Last Updated 5 years ago
PDO and PDO_MySQL libraries are required. You must enable them on the WordPress host.
If you use CPanel:
Enable the PHP extensions:
- pdo
- pdo_mysql
Or if your Web server is on Windows:
Edit php.ini and uncomment the line:
extension=pdo_mysql.so
Or if your Web server is on Ubuntu:
sudo php5enmod pdo
sudo service apache2 reload
If you don’t have access to these commands, please contact the system administrator of your WordPress server.