Reference comparison

Hello, I've looked for any function or an operator (in the PHP documentation) which I could use for Reference comparison. I mean to compare two variable names which are actually references and to find out if they are references to the same variable content. I tried to use the === operator, but it does behave the same if you compare two references or just two identical copys of a variable. Is there any possibility to solve this problem out? Thank you, Adam Hosek aka Mamuf van Shmuuf ----------------------------------------- ICQ#84120575 mamuf@centrum.cz