This error is generated in wp-includes/load.php. Go to your Wordpress directory and go look at that file and search for the line that has the error message.
Look at the 'if' statement above it to see what MySQL extensions your version of Wordpress is trying to use. If it's checking for 'mysqli' and other MySQL extensions, that's a good thing, and you just have to make sure one of those supported extensions is installed. If it's only checking for the 'mysql' extension, the problem is that extension has been deprecated and is no longer installed with new versions of PHP. You have to either upgrade your Wordpress installation, or see if it is possible to install the 'mysql' extension with your version of PHP.
I've already gone into the php.ini file and uncommented the mysqli.dll extension but I don't actually have a mysqli.dll file. Is there somewhere I need to download this file from? (I'm using Windows 10).
HI, This is Subramanyam from qatraininghub. The Solution for this 'Your PHP installation appears to be missing the MySQL extension which is required by WordPress.' Contact a Host Service Provider like Bigrock, Godaddy, Bluehost, Host Gator any more. Ask Them to Upgrade to Newer Version of PHP.
Problem solved. If you have your own hst account you can upgrade manually by like this. 1.login to cpanel 2.PHP Version. Upgrade it. Simply - cPanel Select PHP version Select and upgrade Thanks for your Question & Answering with me.Subramanyam from We are Started Online training Courses for PHP + MySql with CMS(wordpress,joomla,drupal.) & Live project for more details visit.