Fatal error: Call to undefined function mysql_connect()

[hoangnam]

When accessing the site, I get an error: "Fatal error: Call to undefined function mysql_connect ()". I create wordpress using WordPress Toolkit.

I tried to fix it in some ways like upgrade version php, enable pdo_mysql and nd_mysql and delete define ('WP_USE_EXT_MYSQL', true); in config.php but not

php: 7.2
WordPress: 5.6.2
Mysql: 5.6

Thanks everyone

 

[cPRex]

Hey there! Usually this is an issue because some portion of the site is out of date. Is there a reason the machine is still using MySQL 5.6? Also, have you installed any themes or plugins that may not be up to date?

 

[hoangnam]

Thank you for your response.

I have fixed the above error. When I upgrade PHP version using Cloud Linux and WordPress crashes. My PHP with MultiPHP manager is normal

I don't know the reason why when upgrading PHP with CloudLinux failed

 

[cPRex]

If you purchased your CloudLinux license through cPanel we'd be happy to take a look at that if you submit a ticket to our team.