renaming form posted variable names

I've got a logic problem that I just can't think through. I'm hoping that you can help me find a better way to do this. I need a function that will iterate through $HTTP_POST_VARS looking for variable names with a predefined suffix ($example_post). Then I want to save the value of this var in a variable named $example. The code that I already have successfully does the iteration and selection of vars. What I can't do is make the new var ($example) accessible to the rest of the script. How should I do this? <PRE> function do_each($passed_array) { global ${$tmp_var_name}; if (substr($passed_array[0],-5) == "_post") { $tmp_var_name = substr($passed_array[0],0,-5); ${$tmp_var_name} = $passed_array[1]; return(${$tmp_var_name}); } } function conv_vars($input) { global ${$tmp_var_name}; if (IsSet($input)) { while ($each_array = each($input)) { if (is_array($each_array[1])) // if nested array conv_vars($each_array[1]); // pass to self else $new_var_value = do_each($each_array); } } } conv_vars($HTTP_POST_VARS); </PRE> Thanks in advance for the help. I learn so much from this list! dm