I am getting this error on the Database configuration page when installing Magento 220.127.116.11. My PHP version is 5.5.9 and my MySQL version is 5.5. I am fairly certain I have pdo_mysql installed, but am unable to find any kind of method to install it...I've also read it was native to my PHP version.
I have already tried the following:
to my php.ini file
Any additional suggestions would be greatly appreciated.
you need to check php loaded modules, like:
php -m | grep -i pdo
or just create php info page , and see everything you have there
not sure how it was installed: compiled or package manager
I added these three lines to my php.ini file and it worked out for me.