Posted by Eli on 03/16/05 02:44

Jason Barnett wrote:
> Eli wrote:
> ...
>
>>- is_a($cls,"ClassName") *doesn't require* from ClassName to be
>>declared, and return false when ClassName is not declared.
>
> ...
>
> Try is_subclass_of()
>
> http://php.net/manual/en/function.is-subclass-of.php
>
is_subclass_of() is not exactly like is_a(), in that it will return
false if the object is exactly from the class.

$cls=new ClassName();
var_dump(is_subclass_of($cls,"ClassName")); //dumps: FALSE!
var_dump(is_a($cls,"ClassName")); //dumps: TRUE!

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