Le 2014-07-22 11:13, Robert Scheck a écrit :

Hello Marc,

On Tue, 22 Jul 2014, Marc Delisle wrote:

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from my experience, only some specific features will break. I don't think that the phpMyAdmin team has collected a list of these features.

something that really wonders me is that this enforcement happened during the 4.2.x cycle...which is supposed to be a stable release series, no? Or why did it happen during 4.2.x?

IIRC, it was caused by something we noticed after 4.2.x started its existence, so we preferred to notice users about it.

...

For big databases, however, there will be a performance problem, as phpMyAdmin relies extensively on information_schema, whose performance with MySQL < 5.5 is worse.

How do you define "big databases"? About how many tables or which size would that be? For me it is a trade-off between sticking to 4.0.x or to accept non-perfect but acceptable performance for e.g. nearly all cases vs. it is always slow and quite unusable (aside of maybe some non-working specific features).

Thousands of tables and/or grants are definitely a problem.

Or is the issue that the performance with MySQL < 5.5 is generally worse and you just "recommend" to use a recent MySQL? But then using the latest phpMyAdmin wouldn't then make things more bad at least :)

You really feel the performance problem once you reach a certain amount of tables.

...

Maybe we can extend phpMyAdmin's 4.0 life (for security fixes).

Depending on above (and given the fact that I do not have any clue if this is realistic) I wonder if there is a chance to conditionalize support for MySQL < 5.5, so to disable some specific features in phpMyAdmin simply in the code?

Not really, as the navigation panel (left) is the one suffering the most from older MySQL versions.

Greetings, Robert