Вывод оценки CSS Star Rating?

<?php
/**
 * Created on 30-May-2006
 *
 * Snippet: CSS Star Rating
 * Author: Garry Nutting
 * For: MODx 0.9.2.1 and above
 *
 * Modified:
 *  06/26/2006 - Added output template support - kylej
 *  06/29/2006 - Added language variables
 * 
 * Placeholder Values
 * ------------------
 *
 * [+starRating+] - output of the <ul> list for the star rating
 * [+totalVotes+] - output the total number of votes
 *  
 */
 
//-- start session
session_start();

//-- snippet parameters
$tvName = (isset ($tvName)) ? $tvName : 'star_rating'; // TV name where data will be stored
$tvName2 = (isset ($tvName2)) ? $tvName2 : 'rating_number'; 
$useSession = (isset ($useSession)) ? true : false; // Whether to only one vote per session
$docID = (isset ($docID)) ? $docID : $modx->documentObject['id']; //see if document is set
$pid = (isset ($_GET['pid'])) ? $_GET['pid'] : ''; //see if pid has been passed back
$viewOnly = (isset ($viewOnly)) ? true : false; //disable voting
$cssFile = (isset ($cssFile)) ? $cssFile : 1; //see if alternate css should be used
$imgWidth = (isset ($imgWidth)) ? $imgWidth : 25; //get the image width, used when displaying current rating
$onevote = (isset ($onevote)) ? $onevote : false; //use cookie restrictions to only allow one vote
$ovtime = (isset ($ovtime)) ? $ovtime : 608400; //expire in one week

//-- language variables
$_lang['no_display'] = 'Невозможно отобразить рейтинг';
$_lang['current_1'] = 'Сейчас';
$_lang['current_2'] = '/5 звезд';
$_lang['one_star'] = '1 звезда из 5';
$_lang['two_stars'] = '2 звезды из 5';
$_lang['three_stars'] = '3 звезды из 5';
$_lang['four_stars'] = '4 звезды из 5';
$_lang['five_stars'] = '5 звезд из 5';
$_lang['no_vote'] = 'Голосовать можно один раз';

$cssFiles = array (
	'1' => 'assets/snippets/star_rating/star.css'
);

$starTpl = isset ($starTpl) ? $modx->getChunk($starTpl) : '[+starRating+]<span class="totalvotes">Голосов: [+totalVotes+]</span>';

if (array_key_exists($cssFile, $cssFiles)) {
	$cssFile = $cssFiles[$cssFile];
}

//-- check if visitor is logged in
session_start();

//-- cookie check - if $onevote, check if visitor is allowed to vote
if (!$viewOnly && $onevote == true) {
	if (isset ($_COOKIE['cssStarRating' . $docID])) {
		$viewOnly = true;
	}
	elseif (isset ($_GET['starvote'])) {
		//-- set cookie
		setcookie('cssStarRating' . $docID, 'novote', time() + $ovtime);
	}
}

if (!function_exists('setTemplateVar')) {
	function setTemplateVar($value, $docID, $tplVarName) {
		global $modx;

		//-- get tmplvar id
		$tplName = $modx->getFullTableName('site_tmplvars');
		$tplRS = $modx->db->select('id', $tplName, 'name="' . $tplVarName . '"');
		$tplRow = $modx->db->getRow($tplRS);

		$tblName = $modx->getFullTableName('site_tmplvar_contentvalues');

		$selectQuery = $modx->db->select('*', $tblName, 'contentid=' . $docID . ' AND tmplvarid=' . $tplRow['id']);

		$updFields = array (
			'value' => $value
		);
		$insFields = array (
			'tmplvarid' => $tplRow['id'],
			'contentid' => $docID,
			'value' => $value
		);

		if ($modx->db->getRecordCount($selectQuery) < 1) {
			$modx->db->insert($insFields, $tblName);
		} else {
			$modx->db->update($updFields, $tblName, 'contentid=' . $docID . ' AND tmplvarid=' . $tplRow['id']);
		}
	}
}

//-- get TV value
$tvValue = $modx->getTemplateVar($tvName, '*', $docID);

//-- check session variable to see if already voted
$novote = ($useSession == true && isset ($_SESSION['starRating']['voted' . $docID])) ? true : false;

//-- exit if no TV found
if (!$tvValue)
	return $_lang['no_display'];

//-- split out TV values and calculate current Rating
$splitVals = explode(':', $tvValue['value']);

//-- check to ensure that a vote can be cast
if ($pid <> '' && isset ($_GET['starvote']) && $novote == false && is_numeric($_GET['starvote']) && $_GET['starvote'] >= 0 && $_GET['starvote'] <= 5) {

	//-- get TV value
	$tvValue = $modx->getTemplateVar($tvName, '*', $pid);

	//-- split out TV values and calculate current Rating
	$splitVals = explode(':', $tvValue['value']);

	$newCount = $splitVals[0] + $_GET['starvote'];
	$newVoteNumber = $splitVals[1] + 1;

	@ setTemplateVar("$newCount:$newVoteNumber", $pid, $tvName);
        @ setTemplateVar(round($newCount/$newVoteNumber, 2), $pid, $tvName2);
	//-- as this code is run for each instance of the Star Rating,
	//-- the $_GET variable is unset so the update is only run once
	//-- useful for when star rating multiple times on same page ;)
	unset ($_GET);

	if ($useSession == true) {
		$_SESSION['starRating']['voted' . $pid] = true;
	}

	//-- refresh page to show correct ratings
	$curURL = $modx->makeUrl($modx->documentObject['id']);
	$modx->sendRedirect($curURL);
}

if ($splitVals[1] > 0) {
	$currentStarValue = $splitVals[0] / $splitVals[1];
	$totalVotes = $splitVals[1];
} else {
	$currentStarValue = 0;
	$totalVotes = '0';
}

$starPhArray = array ();

$output = '';
$width = $currentStarValue * $imgWidth;

if (!$viewOnly) {
	$starPhArray['starRating'] = "<ul class='star-rating'>
		<li class='current-rating' style='width:" . $width . "px;'>" . $_lang['current_1'] . $currentStarValue . $_lang['current_2'] . "</li>
		<li><a href='[~[*id*]~]?starvote=1&pid=[*id*]' title='" . $_lang['one_star'] . "' class='one-star'>1</a></li>
		<li><a href='[~[*id*]~]?starvote=2&pid=[*id*]' title='" . $_lang['two_stars'] . "' class='two-stars'>2</a></li>
		<li><a href='[~[*id*]~]?starvote=3&pid=[*id*]' title='" . $_lang['three_stars'] . "' class='three-stars'>3</a></li>
		<li><a href='[~[*id*]~]?starvote=4&pid=[*id*]' title='" . $_lang['four_stars'] . "' class='four-stars'>4</a></li>
		<li><a href='[~[*id*]~]?starvote=5&pid=[*id*]' title='" . $_lang['five_stars'] . "' class='five-stars'>5</a></li>
	</ul>";
} else {
	$starPhArray['starRating'] = "<ul class='star-rating'>
	<li class='current-rating' style='width:" . $width . "px;'>" . $_lang['current_1'] . $currentStarValue . $_lang['current_2'] . "</li>
		<li class='one-star'>1</li>
		<li class='two-stars'>2</li>
		<li class='three-stars'>3</li>
		<li class='four-stars'>4</li>
		<li class='five-stars'>5</li>
	</ul>";
}

$starPhArray['totalVotes'] = $totalVotes;

foreach ($starPhArray as $n => $v) {
	$starTpl = str_replace('[+' . $n . '+]', $v, $starTpl);
}

if ($novote) {
	$output .= '<div class="star-rating-warning">' . $_lang['no_vote'] . '</div>';
} else {
	$output .= $starTpl;
}

return $output;
?>