place this in the same dir as the file you want to shuffle and change $textfile to the filename of the list.
shuffle.php
PHP Code:
<?php
$textfile = "urls.txt";
$data = file($textfile);
shuffle($data);
shuffle($data);
shuffle($data);
$fp = fopen($textfile, "w+");
foreach($data as $line) {
fwrite($fp, trim($data) . "\r\n");
}
fclose($fp);
?>