func_get_args() and call-by-reference?

Hi, I try to do a function called unicode_enc() which takes a number of parameters that differ between calls. It should encode all parameters to unicode using utf8_encode($arglist[$i]). I am using Variable-length argument lists as described in the manual and tried to call the function this way: unicode_enc(&$text); but to no success. Is call-by-reference possible when using func_get_args? TIA, Ata