What potential pitfalls should be considered when using PHP functions like scandir() or glob() to handle images on a website?

One potential pitfall when using PHP functions like scandir() or glob() to handle images on a website is the risk of exposing sensitive files or directories to the public. To mitigate this risk, it is important to validate the file paths and only allow access to specific directories where images are stored. 

$allowed_directories = ['images/', 'uploads/']; // Define allowed directories

$directory = 'images/'; // Example directory to scan

if (in_array($directory, $allowed_directories)) {
    $files = scandir($directory);
    
    foreach ($files as $file) {
        // Process each file
    }
} else {
    // Handle unauthorized access
}

Keywords

scandir glob images security file handling

Related Questions