PHP/File Directory/chgrp

Using the chown() and chgrp() Functions

   <source lang="html4strict">

<?php

    $dr = @opendir("/tmp/");
    if(!$dr) {
         echo "Error, couldn"t open /tmp/!";
         exit;
    }
    while(($filename = readdir($dr)) !== false) {
         chown($filename, "php");
         chgrp($filename, "phpgroup");
    }
         closedir($dr);

?>

 </source>