header not working

[davidannis]

I am trying to redirect to the login page if a user is not logged in. I have the following piece of code:

    $slashpos=  strrpos($_SERVER['SCRIPT_NAME'], '/');
    $path=substr($_SERVER['SCRIPT_NAME'],0,($slashpos+1));
    header('Location: '. $_SERVER['HTTP_HOST'].$path.'login.php?message=This%20page%20is%20only%20for%20gallery%20personnel');
    //echo 'Location: '. $_SERVER['HTTP_HOST'].$path.'login.php?message=This%20page%20is%20only%20for%20gallery%20personnel';
    exit('');

If I execute the script as is I get nothing - a blank page.

 

If I uncomment the echo line I get:

Location: localhost:8888/Art3/theme/login.php?message=This%20page%20is%20only%20for%20gallery%20personnel

which seems right to me.

 

I have the following lines at the top of the script and I'm getting no errors

ini_set('display_errors', 1);
error_reporting(0);

I have tried:

just using 'Location: login.php?message=foo' and

constructing the URL from $_SERVER['SERVER_NAME'] and $_SERVER['SERVER_PORT']

 

[requinix]

Stick the "http://" in there too.

[mac_gyver]

error_reporting(0);

 

 

that stops the reporting of all errors.

 

that should be -

error_reporting(E_ALL);

[davidannis]

Adding http:// makes no difference

 

Setting Error Reporting to E_ALL gives me warnings about undeclared variables and undefined indexes followed by an error because the header was already sent. error_reporting(E_ERROR); results in the same blank screen.

[mac_gyver]

the error about the header() ... states that some output was sent to the browser and on what line all or the end of that output was at, that's preventing the header() from working. you would need to find and fix what is causing that output.

[davidannis]

The header was sent because of a blank line at the end of an included php file and because of the warning messages. Once I got rid of both the blank line and the warnings it works. Thank you all for the help.