How can the issue of "Cannot modify header information" be resolved in PHP?

Issue: The "Cannot modify header information" error occurs in PHP when there is an attempt to modify header information after it has already been sent to the browser. To resolve this issue, make sure to not output any content before calling functions like header() or setcookie(). 

// Ensure that no output is sent before calling header()
ob_start();

// Your PHP code here

// Send headers after all processing is done
header("Location: https://www.example.com");

Keywords

header output buffering ob_start ob_end_flush ob_clean

Related Questions