Poll zonder MySQL - Class

class.php
[code]
<?php

class Poll {
	var $question = '';
	var $answers = array();
	var $name = '';
	var $poll_votes = array();
	
	function __construct() {
		$this->setPollVotes();
	}
	
	protected function setPollVotes() {
		$poll_votes = array();
		
		include('poll_votes.php');
		
		$this->poll_votes = $poll_votes;
	}
	
	protected function getPollVotes() {
		return $this->poll_votes;
	}
	
	public function setPollName($name) {
		$this->name = htmlentities($name);
	}
	
	public function getPollName() {
		return $this->name;
	}
	
	public function resetPollName() {
		$this->name = '';
	}
	
	public function setQuestion($question) {
		$this->question = $question;
	}
	
	public function getQuestion() {
		return $this->question;
	}
	
	public function resetQuestion() {
		$this->question = '';
	}
	
	public function addAnswer($answer) {
		if(is_array($answer)){
			foreach($answer as $key => $value){
				$this->answers[] = $value;
			}
		}else{
			$this->answers[] = $answer;
		}
	}
	
	public function getAnswers() {
		return $this->answers;
	}
	
	public function resetAnswers() {
		$this->answers = array();
	}
	
	public function checkIp($ip) {
		$poll_votes = $this->getPollVotes();
		
		$pollName = $this->getPollName();
		
		foreach($poll_votes as $key => $value){
			if((!empty($pollName) && $poll_votes[$key]['pollName'] == $pollName && $poll_votes[$key]['ip'] == md5($ip)) ||
				(empty($pollName) && $poll_votes[$key]['ip'] == md5($ip)) ||
				($poll_votes[$key]['pollName'] == 'BAN' && $poll_votes[$key]['ip'] == md5($ip))){
				return false;
			}
		}
		
		return true;
	}
	
	protected function addIp($ip) {
		if(!is_writable('poll_votes.php')){
			return false;
		}
		
		$file = fopen('poll_votes.php', 'rb');
		$content = str_replace('<?php ', '', fgets($file));
		$content = str_replace(' ?>', '', $content);
		fclose($file);
		
		$file = fopen('poll_votes.php', 'w+b');
		
		$new_content = '$poll_votes[] = array(\'pollName\' => \'' . $this->getPollName() . '\', \'ip\' => \'' . md5($ip) . '\');';
		
		if(!fwrite($file, '<?php ' . $content . $new_content . ' ?>')){
			fclose($file);
			
			return false;
		}
		
		fclose($file);
		
		return true;
	}
	
	public function banIp($ip) {
		if(!is_writable('poll_votes.php')){
			return false;
		}
		
		$file = fopen('poll_votes.php', 'rb');
		$content = str_replace('<?php ', '', fgets($file));
		$content = str_replace(' ?>', '', $content);
		fclose($file);
		
		$file = fopen('poll_votes.php', 'w+b');
		
		$new_content = '$poll_votes[] = array(\'pollName\' => \'BAN\', \'ip\' => \'' . md5($ip) . '\');';
		
		if(!fwrite($file, '<?php ' . $content . $new_content . ' ?>')){
			fclose($file);
			
			return false;
		}
		
		fclose($file);
		
		return true;
	}
	
	public function addVote($answer) {
		if(!$this->checkIp($_SERVER['REMOTE_ADDR'])){
			return false;
		}
		
		if(!is_numeric($answer)){
			return false;
		}
		
		if(!is_writable('poll_votes.php')){
			return false;
		}
		
		$file = fopen('poll_votes.php', 'rb');
		$content = str_replace('<?php ', '', fgets($file));
		$content = str_replace(' ?>', '', $content);
		fclose($file);
		
		$file = fopen('poll_votes.php', 'w+b');
		
		$new_content = ' $poll_votes[] = array(\'pollName\' => \'' . $this->getPollName() . '\', \'ip\' => \'' . md5($_SERVER['REMOTE_ADDR']) . '\', \'answer\' => \'' . $answer . '\');';
		
		if(!fwrite($file, '<?php ' . $content . $new_content . ' ?>')){
			fclose($file);
			
			return false;
		}
		
		fclose($file);
		
		return true;
	}
	
	public function getVotes() {
		$answers = $this->getAnswers();
		$total = 0;
		
		foreach($answers as $key => $value){
			$votes[$key]['count'] = 0;
			$votes[$key]['answer'] = $value;
		}
		
		$this->setPollVotes();
		
		$poll_votes = $this->getPollVotes();
		
		foreach($poll_votes as $key => $value){
			if($poll_votes[$key]['pollName'] == $this->getPollName()){
				$votes[$poll_votes[$key]['answer']]['count']++;
				$total++;
			}
		}
		
		foreach($answers as $key => $value){
			if($total == 0){
				$votes[$key]['percentage'] = '0';
			}else{
				$votes[$key]['percentage'] = round($votes[$key]['count'] / $total * 100, 1);
			}
		}
		
		return $votes;
	}
}

?>
[/code]

index.php
[code]
<?php

require_once('class.php');

$fPoll = new Poll;

$fPoll->setPollName('Testpoll');

$fPoll->setQuestion('Wat vind je van deze poll?');

$fPoll->addAnswer('Zeer goed');
$fPoll->addAnswer('Goed');
$fPoll->addAnswer('Matig');
$fPoll->addAnswer('Slecht');
$fPoll->addAnswer('Zeer Slecht');

if($fPoll->checkIp($_SERVER['REMOTE_ADDR'])){
	if($_SERVER['REQUEST_METHOD'] == 'POST'){
		if(!$fPoll->addVote($_POST[$fPoll->getPollName()])){
			echo 'Uw antwoord kon niet worden toegevoegd.';
		}else{
			echo 'Uw antwoord is succesvol toegevoegd.<br><br>';
			
			echo $fPoll->getQuestion() . '<br><br>';
			
			$votes = $fPoll->getVotes();
			
			foreach($votes as $key => $key){
				echo $votes[$key]['answer'] . ' - ' . $votes[$key]['count'] . ' (' . $votes[$key]['percentage'] . ' %)<br>';
			}
		}
	}else{
		echo $fPoll->getQuestion() . '<br><br>';
		
		echo '<FORM ACTION="" METHOD="POST">';
		 
		 $answers = $fPoll->getAnswers();
		 
		 foreach($answers as $key => $value){
		 	echo '<INPUT TYPE="radio" NAME="' . $fPoll->getPollName() . '" VALUE="' . $key . '"> ' . $value . '<br>';
		 }
		 
		 echo '<br><INPUT TYPE="submit" VALUE="Vote!" NAME="submit">';
		 
		echo '</FORM>';
	}
}else{
	echo $fPoll->getQuestion() . '<br><br>';
	
	$votes = $fPoll->getVotes();
	
	foreach($votes as $key => $value){
		echo $votes[$key]['answer'] . ' - ' . $votes[$key]['count'] . ' (' . $votes[$key]['percentage'] . ' %)<br>';
	}
}

?>
[/code]