An RFC discussion on the PHP internals mailing list proposes minimum supported version requirements for PHP 8.6. The RFC covers two areas: a minimum autoconf version when building PHP from source, and minimum database versions (MySQL 5.7.3 and MariaDB 10.2.4) when using persistent connections. The database version requirement is tied to adding COM_RESET_CONNECTION support to PDO and mysqlnd, which would make persistent connection behavior more predictable. A follow-up reply from Tim Düsterhus suggests RFC formatting improvements and notes that the ecosystem impact section should mention that persistent connection state will no longer carry over across requests, which could be a breaking change for some users.
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