Roughly three years ago I was writing about Direct MySQL Stream Access - a way to access the low-level stream PHP's mysqlnd library is using. Back then this had been a patch against PHP's mysqli extension. As such a feature is quite dangerous (you can easily mess with the connection state which confuses mysqlnd and/or the MySQL server) we didn't push it into the main PHP tree. Now three years later it's time to look at this again as we don't need to patch PHP anymore.
Since the mentioned patch was written mysqlnd got a plugin interface about which I was talking before. This plugin-interface, especially in the version of PHP 5.4, makes it trivial to implement this feature.[Read more...]