Avoid the dreaded, dry, headers warning.
🎯 How This Works
1. ob_start(); ensures no accidental output happens before headers (prevents “headers already sent” errors).
2. session_status() === PHP_SESSION_NONE prevents duplicate session errors by only starting a session when needed.
3. ob_end_flush(); sends the buffered output to the browser once everything is ready.
At the top of every PHP file, include:
<?php
ob_start(); // Start output buffering to prevent "headers already sent" errors
if (session_status() === PHP_SESSION_NONE) {
session_start(); // Start session only if it's not already active
}
?>
Then, at the bottom of every PHP file, include:
lt;?php ob_end_flush(); ?>
Keep it open to run php.
l
<?php
ob_start(); // Start output buffering to prevent "headers already sent" errors
if (session_status() === PHP_SESSION_NONE) {
session_start(); // Start session only if it's not already active
}
// ✅ Enable error reporting for debugging
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
$assets_folder = 'assets';
// Now you can access the Yoti session variables
// Your PHP logic here...
?>
<!DOCTYPE html>
<html lang="en">
<head>
🚨 Why This is the Best Approach
✅ Prevents “Cannot modify header information” errors
✅ Ensures sessions are only started when necessary
✅ Stops whitespace and accidental echoes from breaking your site
✅ Works with includes, templates, and mixed PHP/HTML pages