I have a few extensions that I've written for PHP, and under 4.1.1, when linking I get the following error:

modules/php4/libphp4.a(cmtest.o): In function `php3_cm_sendsms':
..../php-4.1.1/ext/cmtest/cmtest.c:185: undefined reference to `ParameterPassedByReference'

I built a minimal extension with ext_skel, and only one simple function that had contained the code:


        if(!ParameterPassedByReference(ht, 2))
        {
            zend_error(E_WARNING, "Parameter 2 wasn't passed by reference");
            RETURN_NULL();
        }

This was just to make sure that none of my other code could have been causing the problem. This made the problem clearly reproducible. This exact code works fine under php4.03pl1. (This code was extracted from the API docs on the zend website, I think). 

Thanks,

Ron.