Posted by Eli on 03/16/05 01:13

Hi,

PHP5 uses the 'instanceof' keyword instead of the deprecated is_a()
function.
But there's a big difference between the two:
- is_a($cls,"ClassName") *doesn't require* from ClassName to be
declared, and return false when ClassName is not declared.
- ($cls instanceof ClassName) *requires* from ClassName to be declared,
and generates a fatal error when ClassName is not declared.

Since is_a() is deprecated.. is there a way to use instanceof exactly
like is_a() function (so it will not make an error when the class is not
declared)?

-thanks, Eli

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