Who Not Following Back You algorith on Twitter

karma.php

<?php
require_once('twitteroauth/twitteroauth.php');

define('CONSUMER_KEY', '');
define('CONSUMER_SECRET', '');

define('ACCESS_TOKEN', '');
define('ACCESS_TOKEN_SECRET', '');

$twitter = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, ACCESS_TOKEN, ACCESS_TOKEN_SECRET);
$twitter->host = "https://api.twitter.com/1/";
$result = $twitter->get('followers/ids', array('screen_name' => 'your_name'));
$followerId = $result->{'ids'};

$twitter1 = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, ACCESS_TOKEN, ACCESS_TOKEN_SECRET);
$result1 = $twitter1->get('friends/ids', array('screen_name' => 'your_name'));
$followingId = $result1->{'ids'};

$x = 0;

echo '<div id="output" class="clearfix"><ul class="twitter-users">';

for($i=0;$i<count($followingId);$i++)
{
	if (in_array($followingId[$i], $followerId)) {
    	//do nothing
	}else
	{
		$urlData = 'https://api.twitter.com/1/users/show.json?id='.$followingId[$i];
		$data = json_decode(file_get_contents($urlData));
		//echo $data->{'screen_name'}." not following you.<br>";
		echo '<li>';
		echo '<a href="http://twitter.com/'.$data->{'screen_name'}.'" class="avatar" target="_blank"><img src="'.$data->{'profile_image_url'}.'" height="48" width="48"></a>';
		echo '<input name="user-"'.$x.' value="'.$data->{'screen_name'}.'" type="checkbox">';
		echo '<a href="http://twitter.com/'.$data->{'screen_name'}.'" class="screen-name" target="_blank">'.$data->{'screen_name'}.'</a>';
		echo '<div class="is-friend">you follow them</div>';
		echo '<div class="action"><a href="javascript:void(0);" onclick="action(this, "unfollow", "'.$data->{'screen_name'}.'"); return false;">unfollow</a></div>';
		echo '</li>';
		$x = $x + 1;
	}
}

echo '</ul></div>';
?>

Now working