What are the differences between scandir() and glob() functions in PHP, and when would you choose one over the other for listing files in a directory?

The main difference between scandir() and glob() functions in PHP is that scandir() returns all files and directories in a specified directory, while glob() allows for pattern matching to filter the results. If you simply need to list all files and directories in a directory, scandir() is a more straightforward choice. However, if you need to filter the results based on a specific pattern, glob() would be more suitable.

// Using scandir() to list all files and directories in a directory
$directory = "/path/to/directory";
$files = scandir($directory);

foreach ($files as $file) {
    echo $file . "\n";
}

// Using glob() to list only PHP files in a directory
$directory = "/path/to/directory";
$phpFiles = glob($directory . "/*.php");

foreach ($phpFiles as $file) {
    echo $file . "\n";
}