How can PHP be used to read only specific files from a directory?

To read only specific files from a directory in PHP, you can use the `glob()` function along with a wildcard pattern to filter out the files you want to read. By specifying the pattern of the files you want to include, you can retrieve only those specific files from the directory.

$files = glob('/path/to/directory/*.txt');

foreach ($files as $file) {
    // Process each specific file here
}