alter switch variable inside case?

I'd like to be able to modify the switch variable inside a case statement, like this: switch ($foo) { case 'step2': do_step2(); if ($error) $foo='step1'; //repeat step1 break; case 'step1': do_step1(); break; case 'a_third_thing': do_something_else(); break; } Can you modify the variable ($foo) inside a case statement and have it evaluated for subsequent 'case's like this? If not, I will have to revert to a series of if statements, in which this can be done: if ($foo=='step2') { do_step2(); if ($error) $foo='step1'; } if ($foo=='step1') { do_step1(); } etc. Switch-case seems cleaner, and I'd prefer to stick with it. __________________________________________________ Do You Yahoo!? Yahoo! Finance - Get real-time stock quotes http://finance.yahoo.com