How PHP connects to server MySQL via VPN

Existing MySQL database server, set up intranet access, local MySQL client connection must be through the VPN virtual network to connect. Now there is another Apache, PHP server needs to connect to MySQL server data table through PHP, ask how to implement

Reply to discussion (solution)

You can run the VPN client on that server.

And this layer is generally a server-level operation

PHP should not be a client for VPN

You can run the VPN client on that server.

And this layer is generally a server-level operation

PHP should not be a client for VPN

Can't connect to VPN via PHP terminal?

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