What are the benefits and drawbacks of using strtolower() in an autoloader for PHP class discovery?

Issue: When using an autoloader for PHP class discovery, it is important to ensure that the class names are normalized to prevent case sensitivity issues. One way to achieve this is by using the strtolower() function to convert the class names to lowercase before attempting to load them. Code snippet: 

spl_autoload_register(function($class) {
    $class = strtolower($class); // Normalize class name to lowercase
    $file = __DIR__ . '/classes/' . $class . '.php';
    
    if (file_exists($file)) {
        include $file;
    }
});

Keywords

strtolower autoloader PHP class discovery benefits drawbacks

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