What are some potential pitfalls of manually calling a PHP file and expecting the content to be output?

When manually calling a PHP file, the content may not be output as expected due to missing headers or incorrect server configurations. To ensure proper output, it is important to include the necessary headers in the PHP file to specify the content type and encoding. 

<?php
// Set the content type and encoding
header('Content-Type: text/html; charset=utf-8');

// Your PHP code here
?>

Keywords

include require output buffering file path error handling

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