How to fix the below error when running the script?
Warning: Cannot modify header information - headers already sent by (output started at /folder/index.php:18) in /folder/index.php on line 35
The above line mentioned in the error messages contains header() and setcookie() calls.
As per the PHP documentation:
Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP.
So move header('Location: reset.php?username='.$username); before any other kind of output.
Please refer to the below links for more details,
