deleting all files in except the one running the delete code

Question

I want to delete all the files in the public_html directory of my domain by a single command. For this one of SO\'s questions had this answer:

Answer 1

Use something like this:

function delete_all($filename) {
    // files listed in this array will not being deleted
    $exceptions = array (
        'file1',
        'file2', ...
    );

    if(!in_array($filename, $exceptions)) {
        unlink($filename);
    }
}

// !!! attention !!! this will delete all files except those listed above
// from this folder. Make sure you know what you are doing
array_map('delete_all', glob("path/to/temp/*"));