Master the wp-config.php database block: DB_CHARSET, DB_COLLATE, WP_ALLOW_REPAIR, MYSQL_CLIENT_FLAGS, a custom db.php drop-in for TLS pinning, and WP-CLI checks to verify encoding and SSL on every connection.
Master wp-cli search-replace with real examples for domain migration, HTTP to HTTPS, staging to production, and fixing broken URLs. Includes a complete cheat sheet with every flag and option.
