redirect with header function not working - php

Question

I have this htaccess filecontent:
Options +FollowSymLinks
RewriteEngine On
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^admin/([a-zA-Z]+)/?([a-zA-Z0-9/]*)$ public/admin/index.php?page=$1&query=$2 [L]
RewriteRule ^([a-zA-Z]+)/?([a-zA-Z0-9/]*)$ public/index.php?page=$1&query=$2 [L]
And now im trying to make a redirection depending on a session, very simple stuff. I have a Controller with this function:
protected function redirect($url) {
header("Location: http://localhost:8888/myproject/" . $url, true);
exit();
}
The ClientController that extends Controller has the page function
private function user_page() {
$this->redirect("homepage"); //Not working...
}
I have tried different ways of writing the location path like
Location: localhost:8888/myproject/" . $url,
Location: /myproject/" . $url,
Now after reading all posts on stackoverflow, I see none of these solutions have worked for me..
Edit: the solution to this can be seen on header redirect to Location does not work

Answer 1

After getting an answer from header redirect to Location does not work I found that the problem was some row of spaces that had been inputted after ?> in the Controller, so it took a while to notice it.
Clarification:
If you have the same problem make sure you have line numbers set and see if you can see any line numbers after the file content. If there is you may have blank lines after aswell. Just delete these. Needless to say, the same goes for linenumbers before filecontent