Recount MyBB Polls

pollrecount.php

<?php
if(!defined("IN_MYBB"))
{
	die("This file cannot be accessed directly.");
}

function pollrecount_info()
{
	return array(
		"name"					=>	"Poll Recount",
		"description"			=>	"Provides an option to recount poll votes for an individual poll.",
		"website"				=>	"",
		"author"				=>	"Cameron:D",
		"authorsite"			=>	"http://community.mybb.com/user-24685.html",
		"version"				=>	"1.0",
		"compatibility" 		=>	"16*",
	);
}

function pollrecount_activate()
{
	require MYBB_ROOT.'/inc/adminfunctions_templates.php';
	find_replace_templatesets("showthread_poll_results", '#'.preg_quote('{$edit_poll}').'#', '{$edit_poll}{$recount_poll}');
}

function pollrecount_deactivate()
{
	require MYBB_ROOT.'/inc/adminfunctions_templates.php';
	find_replace_templatesets("showthread_poll_results", '#'.preg_quote('{$recount_poll}').'#', '');
}

$plugins->add_hook("showthread_start", "pollrecount_showthread_start"); 
$plugins->add_hook("misc_start", "pollrecount_misc_start"); 

function pollrecount_showthread_start()
{
	global $mybb, $tid, $fid, $recount_poll;

	if(is_moderator($fid, 'caneditposts'))
	{
		$recount_poll = " | <a href=\"misc.php?action=pollrecount&amp;tid={$tid}&amp;my_post_key={$mybb->post_code}\">Recount Votes</a>";
	}
	else
	{
		$recount_poll = '';
	}
}

function pollrecount_misc_start()
{
	global $mybb, $db;

	verify_post_check($mybb->input['my_post_key']);

	$tid = intval($mybb->input['tid']);

	$query = $db->simple_select("threads", "fid", "tid={$tid}");
	$thread = $db->fetch_array($query);

	if(!is_moderator($thread['fid'], 'caneditposts'))
	{
		error_no_permission();
	}

	if($mybb->input['action'] == "pollrecount")
	{
		$query = $db->simple_select("polls", "pid,options", "tid={$tid}");

		if($db->num_rows($query) == 0)
		{
			error($lang->error_invalidpoll);
		}

		$poll = $db->fetch_array($query);
		$totaloptions = count(explode("||~|~||", $poll['options']));
		$votes = array();

		// The -1 here (and below) is due to the fact that vote options start at 1;
		for ($i=0; $i<$totaloptions-1; $i++)
		{
			$votes[$i] = 0;
		}

		$query = $db->simple_select("pollvotes", "voteoption", "pid={$poll['pid']}");

		while ($vote = $db->fetch_array($query))
		{
			$votes[$vote['voteoption']-1] += 1;
		}

		$votestring = implode($votes, "||~|~||");
		$update = array("votes" => $votestring);

		$db->update_query("polls", $update, "pid={$poll['pid']}");

		redirect(get_thread_link($tid), "Poll votes have been recounted");
	}
}