php project works on linux server but not on windows

Question

So I have two copies of exactly the same project. The configuration of the servers is the same. The script has to write some data to database and then redirect the user to the appropriate page with the header() function depending on the data written to the database.

It works fine on the Linux server, though in Windows it tries to redirect first, and then write to the database, which, of course, doesn't work, because there's no data written. If I comment out the header() function in the Windows version, it writes to the database, but doesn't do the redirection.

How can two exact scripts work so different?

Edit:

I'm not sure how do I show the code, since there's so much of it and it's so scattered. But basically, it's just a function that sets the header() and then the function that writes to db. And when it redirects, it should select the data that was written to the database and display it.

That's a very simplified version of it. Bear in mind, the header is set BEFORE the writing to the database. I believe this to be the culprit, but I didn't write the code, and I can't change the architecture of it, since it works perfectly on 2 Linux servers, I just don't understand how. I just need to make it work on the Windows server.

It makes the redirection ok, I mean it sends me to the link that it should send me to, but it doesn't write to the database. But it I comment out the header() part, it writes to the database, but doesn't make the redirection.

Answer 1

Try adding an if statement like this:

if(mysql_query('...') && mysql_affected_rows()){
   header("Location: redirectScript.php");exit();
}

Hope this helps...

Answer 2

The documentation for the header function states the following:

Note:

HTTP/1.1 requires an absolute URI as argument to » Location: including the scheme, hostname and absolute path, but some clients accept relative URIs. You can usually use $_SERVER['HTTP_HOST'], $_SERVER['PHP_SELF'] and dirname() to make an absolute URI from a relative one yourself:

Are you using a relative URL? It's possible that LAMP likes a relative URL more then WAMP does. It is a simple test, so worth a shot.

Answer 3

由于某种原因，我只能在WampServer和PHP 5.2.4上使用它