unfollow all users on tumblr

unfollow.php

<?php

$cookie = "<insert cookies>";
$token = null;

do {
   $users = get_users();
   foreach ($users as $user)
      unfollow($user);
} while (count($users));

echo "done\n";

function get_users($page = 1) {
   global $cookie, $token;

   $url = "http://www.tumblr.com/following";
   $ch = curl_init($url);

   curl_setopt_array($ch, array(
      CURLOPT_RETURNTRANSFER => true,
      CURLOPT_COOKIE         => $cookie
   )); 

   $response = curl_exec($ch);
   preg_match_all('/unfollow_button_[^"]+" data-name="([^"]+)" data-formkey="([^"]+)"/', $response, $m);

   $token = $m[2][0];

   return $m[1];
}


function unfollow($user) {
   global $cookie, $token;

   $url = 'http://www.tumblr.com/svc/unfollow';
   $ch = curl_init($url);

   curl_setopt_array($ch, array(
      CURLOPT_COOKIE         => $cookie,
      CURLOPT_POST           => true,
      CURLOPT_POSTFIELDS     => "form_key={$token}&data[tumblelog]={$user}&data[source]=FOLLOW_SOURCE_FOLLOWING_PAGE"
   )); 

   $response = curl_exec($ch);
   echo "unfollow {$user}\n";
}

Hi dmpatierno,

I'm running this from my server. What do I put in line 3? Do I need to put in a cookie from Tumblr? It puts 11 cookies on my browser. Which one should I put?

Help much appreciated.

Thanks.