libmysql.dll does come with the mysql server as well as with the php download. I tried replacing the libmysql.dll from php with the one shipped with mysql6 as mentioned in the original post without success.
To confirm, are you saying that php_mysql.dll would need to be updated in order for libmysql.dll (version for mysql6) to work correctly?
That's what I suspect, yes. You'd probably have to ask on the -internals list to confirm. The folks who develop the drivers for mysql (and others) are on that list, not this one usually.
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