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dtux__serveur-vote-lalis/include/condorcet/Examples/Examples-with-html/B.Ranking_Manipulation.php

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2022-09-21 12:39:11 +02:00
<?php
declare(strict_types=1);
use CondorcetPHP\Condorcet\{Condorcet, Election};
use CondorcetPHP\Condorcet\Utils\CondorcetUtil;
require_once __DIR__.'/../../__CondorcetAutoload.php';
Condorcet::$UseTimer = true;
$election = new Election;
// Inluding Data
require_once 'vote_data'.\DIRECTORY_SEPARATOR.'BasicVoteConf.php';
\define('TEST_NAME', 'Condorcet Bonus Example');
// View :
?><!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title><?php echo TEST_NAME; ?></title>
<style>
.votant {
float: left;
margin-right: 2cm;
}
</style>
</head>
<body>
<header style="text-align:center;">
<img src="../../condorcet-logo.png" alt="Condorcet Class" style="width:15%;">
</header>
<h1><?php echo TEST_NAME; ?></h1>
<em style="font-weight:bold;"><a href="https://github.com/julien-boudry/Condorcet" target="_blank">Condorcet Class</a> version : <?php echo Condorcet::getVersion(); ?></em><br>
<em>
Number of Candidates :
<?php echo $election->countCandidates(); ?>
|
Number of votes :
<?php echo $election->countVotes(); ?>
</em>
<h2>Candidates list :</h2>
<ul>
<?php
foreach ($election->getCandidatesList() as $candidatName) {
echo '<li>'.$candidatName.'</li>';
}
?>
</ul>
<h2>Registered votes details :</h2>
<?php
foreach ($election->getVotesList() as $vote) {
echo '<div class="votant">';
echo '<strong style="color:green;">'.implode(' / ', $vote->getTags()).'</strong><br>';
echo '<ol>';
foreach ($vote as $rank => $value) {
if ($rank === 'tag') {
continue;
} ?>
<li><?php echo implode(',', $value); ?></li>
<?php
}
echo '</ol><br></div>';
}
?>
<br><hr style="clear:both;">
<h2>Get pairwise :</h2>
<pre>
<?php var_dump(CondorcetUtil::format($election->getPairwise())); ?>
</pre>
<br>
<em style="color:green;">computed in <?php echo number_format($election->getLastTimer(), 5); ?> second(s).</em>
<br><br><hr style="clear:both;">
<h2>Winner by <a target="blank" href="http://en.wikipedia.org/wiki/Condorcet_method">natural Condorcet</a> :</h2>
<strong style="color:green;">
<?php
if ($election->getWinner() !== null) {
echo $election->getWinner();
} else {
echo '<span style="color:red;">The votes of this group do not allow natural Condorcet winner because of <a href="http://fr.wikipedia.org/wiki/Paradoxe_de_Condorcet" target="_blank">Condorcet paradox</a>.</span>';
}
?>
</strong>
<h2>Loser by <a target="blank" href="http://en.wikipedia.org/wiki/Condorcet_method">natural Condorcet</a> :</h2>
<strong style="color:green;">
<?php
if ($election->getLoser() !== null) {
echo $election->getLoser();
} else {
echo '<span style="color:red;">The votes of this group do not allow natural Condorcet loser because of <a href="http://fr.wikipedia.org/wiki/Paradoxe_de_Condorcet" target="_blank">Condorcet paradox</a>.</span>';
}
?>
</strong>
<br><br><hr>
<h2>Some pratices about default method :</h2>
<h3>Use default method :</h3>
<strong>Defaut:</strong> <?php echo Condorcet::getDefaultMethod(); ?> <br>
<pre>
<?php var_dump(CondorcetUtil::format($election->getResult())); ?>
</pre>
<h3>Change it to MiniMax_Margin :</h3>
<?php Condorcet::setDefaultMethod('Minimax_Margin'); ?>
<strong>Defaut:</strong> <?php echo Condorcet::getDefaultMethod(); ?> <br>
<pre>
<?php var_dump(CondorcetUtil::format($election->getResult())); ?>
</pre>
<br><br><hr>
<h2>Vote manipulation :</h2>
<h3>Display votes with tag "custom_tag_One"</h3>
<?php
foreach ($election->getVotesList('custom_tag_One', true) as $vote) {
echo '<div class="votant">';
echo '<strong style="color:green;">'.implode(' / ', $vote->getTags()).'</strong><br>';
echo '<ol>';
foreach ($vote as $rank => $value) {
if ($rank === 'tag') {
continue;
} ?>
<li><?php echo implode(',', $value); ?></li>
<?php
}
echo '</ol><br></div>';
}
?>
<div style="clear:both;"></div>
<h3>Or without with tag "custom_tag_Two"</h3>
<?php
foreach ($election->getVotesList('custom_tag_Two', false) as $vote) {
echo '<div class="votant">';
echo '<strong style="color:green;">'.implode(' / ', $vote->getTags()).'</strong><br>';
echo '<ol>';
foreach ($vote as $rank => $value) {
if ($rank === 'tag') {
continue;
} ?>
<li><?php echo implode(',', $value); ?></li>
<?php
}
echo '</ol><br></div>';
}
?>
<div style="clear:both;"></div>
<h3>Get a ranking without "custom_tag_One" & "custom_tag_Two" tags and display Kemeny-Young result but don't delete it</h3>
<pre>
<?php
$options = [
'tags' => ['custom_tag_One', 'custom_tag_Two'],
'withTag' => false,
];
var_dump(CondorcetUtil::format($election->getResult('KemenyYoung', $options))); ?>
</pre>
<div style="clear:both;"></div>
<h3>Delete vote with "custom_tag_One" & "custom_tag_Two" tags and display Kemeny-Young result</h3> <?php // you can also delete vote without this tag, read the doc ( tips: removeVotesByTags('custom_tag_One', false) )?>
<?php
$election->removeVotesByTags(['custom_tag_One', 'custom_tag_Two']);
?>
<pre>
<?php var_dump(CondorcetUtil::format($election->getResult('KemenyYoung'))); ?>
</pre>
<h3>Check the new vote list</h3>
<?php
foreach ($election->getVotesList() as $vote) {
echo '<div class="votant">';
echo '<strong style="color:green;">'.implode(' / ', $vote->getTags()).'</strong><br>';
echo '<ol>';
foreach ($vote as $rank => $value) {
if ($rank === 'tag') {
continue;
} ?>
<li><?php echo implode(',', $value); ?></li>
<?php
}
echo '</ol><br></div>';
}
?>
<div style="clear:both;"></div>
<br><br><hr>
<!-- <h4>CondorcetUtil::format (for debug only) :</h4>
<pre>
<?php // CondorcetUtil::format($election);?>
</pre> -->
</body>
</html>