150 lines
3.2 KiB
PHP
Executable file
150 lines
3.2 KiB
PHP
Executable file
<?php
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require(__DIR__ . "/../libs/page.php");
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require(__DIR__ . "/../libs/form.php");
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require(__DIR__ . "/../libs/comment.php");
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page_header();
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function get_handler() {
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global $db;
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$stmt = $db->prepare("SELECT * FROM main.auth"); //weirdly, this requires a schema name
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$stmt->execute([]);
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$result = $stmt->fetchAll(PDO::FETCH_DEFAULT);
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$pr = array();
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$fcount = array();
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$frs = array();
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$matrixe = array();
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foreach ($result as $usern) {
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$fn = $usern['username'];
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$pr[$fn] = 1;
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$stmt = $db->prepare("SELECT * FROM main.follow WHERE target = ? AND NOT username = ?");
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$stmt->execute([$fn,$fn]);
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$fcount[$fn] = count($stmt->fetchAll(PDO::FETCH_DEFAULT));
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$stmt = $db->prepare("SELECT * FROM main.follow WHERE username = ?");
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$stmt->execute([$fn]);
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$frs[$fn] = $stmt->fetchAll(PDO::FETCH_DEFAULT);
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$matrixe[$fn] = array();
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$matrixe[$fn][$fn] = 1;
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}
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$ch = 0;
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foreach ($result as $usern) {
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$theuser = $usern['username'];
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$followers = $frs[$theuser];
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if (count($followers) > 0) {
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$ch++;
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}
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foreach ($followers as $follown) {
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$fn = $follown['target'];
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if ($usern['username'] == $fn) continue;
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$dst = $fcount[$fn];
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$matrixe[$usern['username']][$fn] = 1 + 1 / ($dst + 10) / 10;
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///$pr[$usern['username']] += $pr[$fn] / ($dst + 10) / 10;
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}
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}
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$msum = 1;
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for ($i = 0; $i < 50; $i++) {
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$prold = $pr;
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$matrixf = $matrixe;
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$msum_old = $msum;
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$msum = 1;
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$chh = 0;
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foreach ($result as $usera) {
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$una = $usera['username'];
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if (count($frs[$una]) == 0) continue;
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foreach ($result as $userb) {
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$unb = $userb['username'];
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$prb = $prold[$unb];
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if ($prb < pow(0.1,1 - ($i / 50))) {
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continue;
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}
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$chh += $ch;
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}
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}
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foreach ($result as $usera) {
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$una = $usera['username'];
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$pr[$una] = 0.1;
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if (count($frs[$una]) == 0) continue;
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foreach ($result as $userb) {
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$unb = $userb['username'];
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$prb = $prold[$unb];
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if ($prb < pow(0.1,1 - ($i / 50))) {
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continue;
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}
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$matrixe[$una][$unb] = 0;
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foreach ($result as $userc) {
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$unc = $userc['username'];
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$matrixe[$una][$unb] += $matrixf[$una][$unc] * $matrixf[$unc][$unb] / $msum_old * $chh;
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}
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$msum += $matrixe[$una][$unb];
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$pr[$una] += $prb * $matrixe[$una][$unb];
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}
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}
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$new_sum = array_sum($pr);
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foreach ($result as $usern) {
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$h = $pr[$usern['username']];
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$pr[$usern['username']] /= $new_sum;
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}
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}
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$new_sum = array_sum($pr);
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foreach ($result as $usern) {
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$pr[$usern['username']] = $pr[$usern['username']] * 100 / $new_sum;
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}
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function cmp($a, $b) {
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if ($a == $b) {
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return 0;
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}
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return ($a > $b) ? -1 : 1;
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}
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uasort($pr,'cmp');
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foreach ($pr as $usern => $rr) { ?>
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<div class='comment'>
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<div class="avatar">
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<img src="/pfp/<?php echo $usern ?>.png" class="avatar-img">
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<div>
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<div><b>
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<a class="link" href="/user.php?id=<?php echo $usern ?>">
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<?php echo $usern ?>
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</a>
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</b>
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</div>
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</div>
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</div>
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<div><b>Power</b>: <?php echo $rr ?>%</div>
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</div>
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<?php }
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}
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get_handler();
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?>
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<?php
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page_footer();
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?>
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