Headers already sent

[heinkasner]

I have this code snippet:

 

echo "<script language='javascript'>alert('FreeExam database backed up successfully');</script>";

header('Location: Admin.php');

exit();

 

When I take the first line out, it works fine, but when running this, it gives me the following error: 'Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\FreeExam\Selector.php:209) in C:\xampp\htdocs\FreeExam\Selector.php on line 210' . I need to display a message to the user before redirecting to the Admin.php page.

 

Any help would be greatly appreciated!!

[Pikachu2000]

See the sticky topic at the top of this forum titled, "HEADER ERRORS - READ HERE BEFORE POSTING THEM".

[jcanker]

Long story short:  You can't use headers if you output ANYTHING first.  That echo statement in the beginning is output.

 

(And Pikachu2000 has helped me a million times on this board, it seems.  Best to listen to his advice )

 

[The Little Guy]

(And Pikachu2000 has helped me a million times on this board, it seems.  Best to listen to his advice )

 

And yet you only have 204 posts

 

 

You could try something like this:

 

header("Refresh: 5; Admin.php");
echo "<script language='javascript'>alert('FreeExam database backed up successfully');</script>";

[Andy-H]

(And Pikachu2000 has helped me a million times on this board, it seems.  Best to listen to his advice )

 

And yet you only have 204 posts

 

 

You could try something like this:

 

header("Refresh: 5; Admin.php");
echo "<script language='javascript'>alert('FreeExam database backed up successfully');</script>";

 

 

Post count is not directly proportional to skill, knowledge or number of times a user has been helped, or has helped others.

 

 

As you've proven time and time again

[Andy-H]

Personally, I wouldn't do it that way, I'd do this:

 

 

// do whatever you need to do
header('location: Admin.php?backup=true');
exit;

 

//Admin.php

<?php
if ( isset($_GET['backup']) )
{
   // do whatever?
   $backupMessage = 'FreeExam database backed up successfully';
}
?>
// html
<?php echo isset($backupMessage) ? $backupMessage : ''; ?>

[heinkasner]

The Little Guy, thank you for this piece of code. I understand why the header is above the echo statement, but it still does not redirect to the Admin page. I don't get an error, but rather just a blank page which is the page I redirect from.