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tea.html	20.76 KB	-rwxr-x--x

Code Editor : count.php

<?php
// index.php
declare(strict_types=1);

/**
 * Simple unique-IP page visit counter using a JSON file.
 * - Stores seen IPs (as keys) and timestamps (optional).
 * - Uses file locking (flock) to avoid race conditions.
 * - Counts unique IPs simply as number of stored IPs.
 */

// Path to storage file (make sure PHP can write here)
$storageFile = __DIR__ . '/ips.json';

// Get the visitor IP (handles proxies lightly)
function get_client_ip(): string {
    $keys = ['HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'REMOTE_ADDR'];
    foreach ($keys as $k) {
        if (!empty($_SERVER[$k])) {
            // If X_FORWARDED_FOR contains multiple IPs, take the first one
            $ip = trim(explode(',', $_SERVER[$k])[0]);
            if (filter_var($ip, FILTER_VALIDATE_IP)) {
                return $ip;
            }
        }
    }
    return '0.0.0.0';
}

// Ensure storage exists and is valid JSON
if (!file_exists($storageFile)) {
    file_put_contents($storageFile, json_encode(['ips' => new stdClass()], JSON_PRETTY_PRINT));
}

// Read, update and write back with locking
$ip = get_client_ip();
$updated = false;
$uniqueCount = 0;

$fp = fopen($storageFile, 'c+'); // open for read/write, create if not exists
if ($fp === false) {
    die("Cannot open storage file.");
}

if (flock($fp, LOCK_EX)) {
    // read contents
    $contents = stream_get_contents($fp);
    if ($contents === false || trim($contents) === '') {
        $data = ['ips' => []];
    } else {
        $data = json_decode($contents, true);
        if (!is_array($data) || !isset($data['ips']) || !is_array($data['ips'])) {
            $data = ['ips' => []];
        }
    }

// Add IP if not present
    if (!array_key_exists($ip, $data['ips'])) {
        $data['ips'][$ip] = date('c'); // store ISO timestamp (optional)
        $updated = true;
    }

$uniqueCount = count($data['ips']);

// write updated data back if changed
    if ($updated) {
        // rewind and truncate then write
        ftruncate($fp, 0);
        rewind($fp);
        fwrite($fp, json_encode($data, JSON_PRETTY_PRINT));
    }
    fflush($fp);
    flock($fp, LOCK_UN);
} else {
    // couldn't lock: best-effort read fallback
    $data = json_decode(file_get_contents($storageFile) ?: '{}', true);
    $uniqueCount = isset($data['ips']) && is_array($data['ips']) ? count($data['ips']) : 0;
}
fclose($fp);

// Output the page and the unique count
?>
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Unique IP Visit Counter</title>
  <style>
    body { font-family: Arial, sans-serif; padding: 2rem; }
    .box { background:#f7f7f7; padding:1rem 1.5rem; border-radius:8px; display:inline-block; }
  </style>
</head>
<body>
  <div class="box">
    <h2>Unique Visits (by IP)</h2>
    <p><strong><?php echo htmlspecialchars((string)$uniqueCount, ENT_QUOTES); ?></strong> unique IP(s) have visited this page.</p>
    <p>Your detected IP: <code><?php echo htmlspecialchars($ip, ENT_QUOTES); ?></code></p>
  </div>
</body>
</html>

Urban Research Lab

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.