How can a whitelist be implemented to enhance security when dynamically loading files in PHP?

When dynamically loading files in PHP, it is important to implement a whitelist to enhance security. This means only allowing specific files or file paths to be loaded, preventing potential malicious files from being executed. By creating a whitelist of allowed files, you can restrict access to only those that are known to be safe. 

// Define an array of allowed file paths
$allowed_files = array(
    '/path/to/allowed/file1.php',
    '/path/to/allowed/file2.php'
);

// Check if the requested file is in the whitelist
$requested_file = $_GET['file'];
if (in_array($requested_file, $allowed_files)) {
    include $requested_file;
} else {
    // Handle unauthorized file access
    echo "Unauthorized file access";
}

Keywords

whitelist security dynamically loading files PHP implementation

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