I propose we should start migrating to PHP5 one way to increase performance and simplify code.

Here is what we should do:

1. rename all class constructors to "__construct"
determine what class variables and methods should be private/public/protected (also the way, how that methods/attributes are used by programmers should be taken into account). For example kDBItem::FieldValues is private, but is used as public attribute.
Look through out the classes to determine what immediate benefit could be gained by transforming class implementation php PHP5.

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