Why is a driver error reported when html-php uses pdo to connect to the database?

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You need to install the PDO extension in the PHP environment of Ubuntu, and then open or add it in the php. ini configuration file:
Extension = php_pdo_mysql.so
Extension = php_pdo.so
Restart the web container.

This is a little troublesome. I suggest you add QQ for private chat, 1065890063

No PDO extensions

Do not add incorrect labels such as java and html.

Install pdo_mysql extension

How can I solve this problem? didn't I install the PDO extension? Or?