Complete procedures with a way back.

Install from a trusted package or verified upstream release, isolate configuration secrets, add TLS and network authentication gates, disable dangerous defaults, and test database TLS.

Define explicit TLS-verified database targets, hide arbitrary server entry, enable configuration storage and 2FA, constrain privileges, and test fail-closed behavior.

Deploy phpMyAdmin on an isolated FPM pool, protect it with network and HTTP authentication, verify database TLS, deny unsafe paths, and validate updates.