Этот скрипт может быть использован для отображения опроса, собора голосов от пользователей и показа результатов голосования с использованием AJAX, не перезагружая страницу в браузере.
Скрипт генерирует необходимый HTML и JavaScript код для показа опроса на веб-странице и отправки ответа пользователя на сервер с помощью AJAX технологии.
Скрипт может также отображать результаты опроса в виде графических полос, которые показывают процентную долю каждого из ответов опроса.
Скрипт позволяет избежать подсчета голосов от одного пользователя на основе IP-адреса пользователя и переменной сессии. Он также использует текстовые файлы на сервере для хранения и обновления результатов опроса.
Лицензия GPL.
Системные требования скрипта:
PHP не младше 5.0 версии.
Исходник скрипта
error_reporting(E_ALL);
class WebExpPoll {
// poll question
public $q;
// Ajax callback (itґs the name of Ajax function)
public $f = 'Vote';
// quiz options
public $opt;
// quiz name on radios and ajax div name
public $quiz = 'vote';
// page to output poll results
public $output = 'results.php';
//images location folder
public $imgRoot = 'images/';
// js location folder
public $jsLocation = '';
// js file
public $jsFile = 'poll.js';
// file where votes are saved
public $poll_db = 'pool_results.txt';
// graph images background
public $graph_bg = 1; // 1 - to random bg 0 - to static bg
// the image graph height
public $graph_height = '5';
// message if user cast poll twice
public $voteRep = " You already cast this poll !";
// message result
public $msgRes = "<h2>Poll results:</h2>";
//allow to show table again
public $showT = 'Show poll';
// the bg color to options table
public $TableOptColor = '#ccc';
// style fonts at options table
public $TableOptStyle = 'mycssClass';
public function __construct($quest ='' , $options = array()) {
$this->q = $quest;
$this->opt = $options;
WebExpPoll::mountQuiz();
WebExpPoll::AjaxBuilder();
WebExpPoll::buildPoolResults();
}
protected function setQuestion() {
return $this->q;
}
protected function mountQuiz() {
$this->form = '<div id="'.$this->quiz.'">';
$this->form .= ''.$this->setQuestion().'';
$this->form .= '<form>';
$this->form .= '<table bgcolor=\"'.$this->TableOptColor.'\" border="1">';
(isset($this->TableOptStyle)) ? ($style = 'class=\"'.$this->TableOptStyle.'\"'): ($style = '');
foreach($this->opt as $key => $idx){
$this->form .= '<tr>';
$this->form .= '<td '.$style.'>';
$this->form .= $idx;
$this->form .= '</td>';
$this->form .= '<td>';
$this->form .= '<input type="radio" name="'.$this->quiz.'" value="'.$key.'" onclick="'.$this->f.'(this.value)">';
$this->form .= '</td>';
$this->form .= '</tr>';
}
$this->form .= '</table>';
$this->form .= '</form>';
$this->form .= '</div>';
print $this->form;
}
private function AjaxBuilder() {
$Ajax = 'var xmlHttp
function Vote(int)
{
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
}
var url="'.$this->output.'"
url=url+"?vote="+int
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}
function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{
document.getElementById("'.$this->quiz.'").
innerHTML=xmlHttp.responseText;
}
}
function GetXmlHttpObject()
{
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}';
$Filepath = $_SERVER['DOCUMENT_ROOT'].$this->jsLocation.$this->jsFile;
if(!file_exists($Filepath)){
$fp = fopen($Filepath,"w");
fputs($fp,$Ajax);
fclose($fp);
}
}
private function buildPoolResults(){
$numOpt = sizeof($this->opt);
$php = '<?php'."\n\n";
$php .= '$ip = $_SERVER["REMOTE_ADDR"];'."\n";
$php .= '// processes the votation result'."\n";
$php .= '$vote = $_REQUEST["vote"];'."\n";
$php .= 'if(isset($vote)){'."\n";
/*$php .= 'if(!headers_sent()){'."\n";
//$php .= 'session_start();'."\n".'}'."\n";
*/
$php .= 'session_start();'."\n";
$php .= 'if ( session_is_registered("vote")) {'."\n";
$php .= "echo \"<img src='".$this->imgRoot."halt.png'> ".$this->voteRep." \";"."\n";
$php .= '}else{'."\n";
$php .= 'session_register("vote"); '."\n";
$php .= 'for($i=0;$i<'.$numOpt.';$i++){'."\n";
$php .= '$d1 .="0,";'."\n";
$php .= '}'."\n";
$php .= '$d1 = substr($d1,0,strlen($d1)-1);'."\n";
$php .= '$filename = "'.$this->poll_db.'";'."\n";
$php .= 'if(!is_file($filename)){'."\n";
$php .= '$fp = fopen($filename,"w");'."\n";
$php .= 'fwrite($fp,$d1);'."\n";
$php .= 'fclose($fp);'."\n";
$php .= '}'."\n";
$php .= '$content = file($filename);'."\n";
$php .= '//put content in array'."\n";
$php .= '$array = explode(",", $content[0]);'."\n";
$php .= 'foreach($array as $i => $x){'."\n";
$php .= 'if($vote==$i){'."\n";
$php .= '$array[$i] +=1;'."\n";
$php .= '}'."\n";
$php .= '$rs .= $array[$i].",";'."\n";
$php .= 'if(ereg(",,",$rs)){'."\n";
$php .= 'break;'."\n";
$php .= '}'."\n".'}'."\n";
$php .= '$fp2 = fopen($filename,"w");'."\n";
$php .= 'fwrite($fp2,$rs);'."\n";
$php .= 'fclose($fp2);'."\n";
$php .= '?>'."\n";
$php .= ''.$this->msgRes.''."\n";
$php .= '<?php'."\n";
$php .= 'function max_key($array) {'."\n";
$php .= 'foreach ($array as $key => $val) {'."\n";
$php .= 'if ($val == max($array)) return $key;'."\n";
$php .= '}'."\n".'}'."\n";
$php .= '$max = max_key($array);'."\n";
$php .= '$table = "<table bgcolor=\"#000000\">";'."\n";
$php .= '$quiz = array("';
$php .= ''.implode("\",\"",$this->opt).'");'."\n";
$php .= '$nt = sizeof($quiz);'."\n";
$php .= 'foreach($quiz as $n => $itens ){'."\n";
$php .= '$table .= "<tr>";'."\n";
$php .= '$table .= "<td style=\"color:#ffffff\">".$itens."</td>";'."\n";
$php .= '$table .= "<td style=\"color:#ffffff\">";'."\n";
if($this->graph_bg){
$php .= '//Dynamic bg'."\n";
$php .= '$bg = array("'.$this->imgRoot.'poll_black.gif",'."\n";
$php .= '"'.$this->imgRoot.'poll_red.gif",'."\n";
$php .= '"'.$this->imgRoot.'poll_purple.gif",'."\n";
$php .= '"'.$this->imgRoot.'poll_green.gif",'."\n";
$php .= '"'.$this->imgRoot.'poll_orange.gif",'."\n";
$php .= '"'.$this->imgRoot.'poll.gif");'."\n";
$php .= ''."\n";
$php .= '$table .="<img src=\"".$bg[array_rand($bg)]."\" width=\"".(100*round($array[$n]/($array[$n]+$array[$max]),2))."\" height=\"'.$this->graph_height.'\">";'."\n";
} else {
$php .= '//Static bg'."\n";
$php .= '($n ==0 ? $img = "'.$this->imgRoot.'poll_black.gif" : ($n==1 '."\n";
$php .= '? $img = "'.$this->imgRoot.'poll_red.gif" : ($n==2'."\n";
$php .= '? $img = "'.$this->imgRoot.'poll_purple.gif" : ($n==3'."\n";
$php .= '? $img = "'.$this->imgRoot.'poll_green.gif" : ($img = "'.$this->imgRoot.'poll.gif" )))));'."\n";
$php .= ''."\n";
$php .= '$table .="<img src=\"".$img."\" width=\"".(100*round($array[$n]/($array[$n]+$array[$max]),2))."\" height=\"'.$this->graph_height.'\">";'."\n";
}
$php .= '$table .= (100*round($array[$n]/($array[$n]+$array[$max]),2));'."\n";
$php .= '$table .= "%";'."\n";
$php .= '$table .= "</td>";'."\n";
$php .= '$table .= "</tr>";'."\n";
$php .='}'."\n";
$php .='}'."\n";
$php .= '$table .="</table>";'."\n";
$php .='echo $table;'."\n";
$php .= '$_SESSION["vote"] = $ip;'."\n";
$php .= '}'."\n";
$php .= 'echo "<br><a href=\"#\" onclick=\"window.location.reload();\">'.$this->showT.'</a>";'."\n";
$php .='?>'."\n";
$fp = fopen($this->output,"w");
fputs($fp,$php);
fclose($fp);
}
} // end of class
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