Redirect PHP page AFTER outputting user message

Question

I am trying to redirect a page after successful execution. However, I want to display a message to the user (e.g. 'Changed made. Redirecting...') while the redirection is done. Changing header variables after output in the page causes errors in PHP and I know this. My question is, how should I do this?

My current code is something like

// ... execution code
echo 'Changes made successfully. Now redirecting...';
header('Location: index.php');

and this doesn't work. I have also seen an answer on SO suggesting I use ob_start() and ob_flush() at the start and end of my page, respectively. But that didn't solve my problem either, I still get the error.

NB I need to use PHP only, I don't want JavaScript for redirection.

Edit: I ended up using JavaScript for redirection, as I needed to output some useful message to the user before redirecting, and PHP alone isn't the best solution for that.

Answer 1

first, you cant use "header" after echo or any output. second, why you need php for it? you can use javascript or best, just put it in the html like it says here