Blank screen when using output buffer and there's syntax errors in included file.
PHP doesn't show errors from output buffer.
How to see php output buffer syntax errors?
In my project I used @ for hiding errors if file doesn't exist. But if file does exist and has fatal errors, they would not been shown as well.
Here's code example.
<?php
$title = 'Some title';
ob_start();
@include ('body.tpl'); //I have some php here
$content = ob_get_clean();
?><!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title><?= $title; ?></title>
</head>
<body>
<?= $content; ?>
</body>
</html>