prob. with function parameter with "&"

Hi everybody, I have defined function function func ($var,$val,&$struct){ // do something } if I call this function following way func('a','b',NULL); (because sometimes I don't need to set $struct) apache process (php) crashes without saying word into log... So, is it bug or feature. in fact 'func' is method of class and when it's called via :: it uses $struct otherwise not php is compiled into httpd apache is 1.3.27 info of my php follows PHP Version 4.3.2 './configure' '--with-config-file-path=/net/etc/conf' '--with-apache=../apache' '--enable-sockets' '--enable-ftp' '--with-freetype-dir=/usr' '--with-mysql=/usr' '--enable-gd-native-ttf' '--with-gd' '--enable-exif' '--with-jpeg-dir=/usr' '--with-png-dir=/usr' '--with-zlib' '--enable-inline-optimization' '--enable-sysvsem' '--enable-sysvshm' '--with-xpm-dir=/usr' '--enable-dbx' PHP API 20020918 PHP Extension 20020429 EXT: ... ionCube PHP Accelerator v1.3.3r2, Copyright (c) 2001-2002, by Nick Lindridge BTW: it would be perfect to have function overloading ... -- Mirek Novak jabberID: mirek@njs.netlab.cz ICQ: 119499448