Session_register question

Anon

I have a 3-page registration form and use arrays (i.e. pg1[], pg2[], pg3[]) registered as session variables to store the data. It seems I cannot alter the values of these arrays after they have been entered. For example, navigating back to Page1 from Page2 displays the correct values of Page1, but after I try to change the data and save it doesn\\\\'t.

I read somewhere that session variables, once registered, cannot be changed. Is this true? Is there a workaround - especially with arrays? BTW, I am changing the values via HTMP input fields and POST.

Thanks all.

[deleted]

Ofcourse session vars can be changed after registering. They would be useless otherwise. :-)

You have to be carefull of caching. Simply pressing the 'back' button means that the browser can cache the old page without accessing your script at all, thus showing old data...

Anon

The session variables can be changed.

Probably, you have the same name in the input field than the session variable. So one destroy another.

The best solution is use the input fields like $HTTP_POST_VARS["name_here"] than $name_here.

Anon

Alex is absolutely correct. If you have a session variable and a form variable of the same name, then in the next page the variable of that name will be the value of the session variable. The only way to access the form variable is with the $HTTP_POST_VARS array.

Anon

Thanks to all for helping me solve my problem. Yes, I used the same names for form variables and session variables.

I was POSTing to $PHP_SELF and I realized that session_start() at the beginning of my script was overriding the changed values of form variables. I used $HTTP_POST_VARS as suggested and it worked. A simple one line fixed the problem. Assuming $MyFormVar is the form variable array, then:

$MyFormVar = $HTTP_POST_VAR['MyFormVar'];