id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
16758	PHP5-port - move of wpdb::check_database_version()	hakre		"The function {{{wpdb::check_database_version()}}} is doing a check of the database version against a needed database version. The database server version is returned from $this->db_version(), the required database version is in a global variable called `$required_mysql_version`.

This keeps the database code coupled to the global variable while the class is made to be replaced, e.g. for other database abstractions (compare #14508 which is made for ''extends wpdb''). Normally the database class is a singleton in a global variable already.

Therefore this mixes global with local space twice. I suggest to de-couple wpdb a bit from that hardencoded global variable name and move the code out of the wpdb class into that alread existing global function called wp_check_mysql_version().

This should make the database interface a bit more lightweight which could be a benefit when porting to PHP5.

"	enhancement	new	normal	Awaiting Review	General	3.1	normal		has-patch