How can I handle errors or 404 responses when attempting to automatically convert folder names to lowercase in URLs?

When attempting to automatically convert folder names to lowercase in URLs, it is important to handle errors or 404 responses gracefully. One way to do this is by checking if the requested folder exists before converting its name to lowercase. If the folder does not exist, you can return a 404 response to indicate that the requested resource was not found. 

<?php
$requested_folder = $_SERVER['REQUEST_URI'];
$requested_folder = strtolower($requested_folder);

if (file_exists($_SERVER['DOCUMENT_ROOT'] . $requested_folder)) {
    // Process the request
} else {
    http_response_code(404);
    echo '404 - Not Found';
}
?>

Keywords

error handling 404 response folder names URL conversion strtolower

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