difference between 4.2.3 and 4.3.0

[John Lodder]

I have a vended product that behaves differently under PHP 4.2.3 than it
does under 4.3.0. With 4.3.0, I get the error:

Fatal error: Cannot redeclare <function> in <file> on line <line>

Everything I've found indicates that 4.3 will give an error if there is a
duplicate function when 4.2 would not, and the fix is to remove one of
the declarations of the function (and when I do so, the product appears
to work).

However, I am uncertain if the vendor will support a modified version of
their code, so my question is, is there an option to PHP that will give
4.2 behavior in a 4.3 release, compile time, in php.ini, or something
else?

thanks,
john.
--
"Oh, to be in England now that April's there" --RB
My opinions are mine. All mine. Replete with very me.