a) Not using var for member variables but moving to PPP. b) Not using is_a but using instanceof.
c) references usage - things like: <? function f() {...} function &r() {...} $a = f(); //OK $b =&r(); //OK $a =&f(); //warning - function returns value but reference assigned $b = r(); //warning - function returns reference but value assigned ?>
regards, Wojtek
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