Track visitors of your website by including this script on your index.php

index.php

<?php
// This is a laravel example
include 'track-image.php';

use Illuminate\Contracts\Http\Kernel;
use Illuminate\Http\Request;

define('LARAVEL_START', microtime(true));

/*
|--------------------------------------------------------------------------
| Check If The Application Is Under Maintenance
|--------------------------------------------------------------------------
|
| If the application is in maintenance / demo mode via the "down" command
| we will load this file so that any pre-rendered content can be shown
| instead of starting the framework, which could cause an exception.
|
*/

if (file_exists($maintenance = __DIR__.'/../storage/framework/maintenance.php')) {
    require $maintenance;
}

/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader for
| this application. We just need to utilize it! We'll simply require it
| into the script here so we don't need to manually load our classes.
|
*/

require __DIR__.'/../vendor/autoload.php';

/*
|--------------------------------------------------------------------------
| Run The Application
|--------------------------------------------------------------------------
|
| Once we have the application, we can handle the incoming request using
| the application's HTTP kernel. Then, we will send the response back
| to this client's browser, allowing them to enjoy our application.
|
*/

$app = require_once __DIR__.'/../bootstrap/app.php';

$kernel = $app->make(Kernel::class);

$response = $kernel->handle(
    $request = Request::capture()
)->send();

$kernel->terminate($request, $response);

track-image.php

<?php
/* track-image.php */

// Function to get the location of the visitor based on IP
function getVisitorLocation($ip = null) {
    // If no IP is provided, use the visitor's IP address
    if ($ip === null) {
        $ip = $_SERVER['REMOTE_ADDR'];
    }

    // API endpoint
    $apiUrl = "http://ip-api.com/json/{$ip}";

    // Fetch data from the API
    $response = file_get_contents($apiUrl);
    if ($response === false) {
        return null; // Handle API error
    }

    // Decode the JSON response
    $locationData = json_decode($response, true);

    // Check for success
    if ($locationData['status'] === 'success') {
        return $locationData;
    }

    return null; // Handle failure
}

// Function to detect device type based on the User-Agent string
function getDeviceType() {
    $userAgent = $_SERVER['HTTP_USER_AGENT'];
    // Check for mobile devices
    if (preg_match('/(android|iphone|ipad|ipod|mobile)/i', $userAgent)) {
        return 'Mobile';
    }
    // Check for tablet devices
    elseif (preg_match('/(tablet|kindle|nexus 7)/i', $userAgent)) {
        return 'Tablet';
    }
    // Default is Desktop
    else {
        return 'Desktop';
    }
}

// Get the visitor's location
$location = getVisitorLocation();

// Get the visitor's Device Type
$device = getDeviceType();

// If location data is retrieved, process it
if ($location || $device) {
    // Prepare the filename based on current time and country
    $timestamp = date("Y-m-d_H-i-s");
    $country = preg_replace('/\s+/', '_', strtolower($location['country']));  // Replace spaces with underscores
    $filename = "{$timestamp}_{$country}_{$device}.txt";

    // Prepare the content to write to the file
    $content = "IP: " . $location['query'] . "\n";
    $content .= "Country: " . $location['country'] . "\n";
    $content .= "Region: " . $location['regionName'] . "\n";
    $content .= "City: " . $location['city'] . "\n";
    $content .= "ZIP Code: " . $location['zip'] . "\n";
    $content .= "Latitude: " . $location['lat'] . "\n";
    $content .= "Longitude: " . $location['lon'] . "\n";
    $content .= "ISP: " . $location['isp'] . "\n";
    $content .= "\n";
    $content .= "Device: " . $device . "\n";
    $content .= "User Agent: " . $_SERVER['HTTP_USER_AGENT'] . "\n";

    // Create the file and write the location data
    file_put_contents($filename, $content);

    //echo "Location data has been written to: " . $filename;
} else {
    //echo "Unable to fetch location.";
}

You can use it on your index og:image

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta property="og:title" content="My Website" />
    <meta property="og:description" content="This is a description of my page." />
    <meta property="og:image" content="track-image.php" />
    <meta property="og:url" content="http://example.com" />
    <title>My Website</title>
</head>
<body>
    <h1>Welcome to My Website</h1>
    <p>Some content here.</p>
</body>
</html>

Add this lines of code if you want to use it as og:image

// Serve the image (e.g., a 1x1 pixel transparent image)
header('Content-Type: image/png');

// Create a 1x1 transparent PNG image
$image = imagecreatetruecolor(1, 1);
$color = imagecolorallocatealpha($image, 0, 0, 0, 127);  // Fully transparent color
imagefill($image, 0, 0, $color);
imagesavealpha($image, true);

// Output the image
imagepng($image);
imagedestroy($image);

so the full code will be

<?php

// Function to get the location of the visitor based on IP
function getVisitorLocation($ip = null) {
    // If no IP is provided, use the visitor's IP address
    if ($ip === null) {
        $ip = $_SERVER['REMOTE_ADDR'];
    }

    // API endpoint
    $apiUrl = "http://ip-api.com/json/{$ip}";

    // Fetch data from the API
    $response = file_get_contents($apiUrl);
    if ($response === false) {
        return null; // Handle API error
    }

    // Decode the JSON response
    $locationData = json_decode($response, true);

    // Check for success
    if ($locationData['status'] === 'success') {
        return $locationData;
    }

    return null; // Handle failure
}

// Function to detect device type based on the User-Agent string
function getDeviceType() {
    $userAgent = $_SERVER['HTTP_USER_AGENT'];
    // Check for mobile devices
    if (preg_match('/(android|iphone|ipad|ipod|mobile)/i', $userAgent)) {
        return 'Mobile';
    }
    // Check for tablet devices
    elseif (preg_match('/(tablet|kindle|nexus 7)/i', $userAgent)) {
        return 'Tablet';
    }
    // Default is Desktop
    else {
        return 'Desktop';
    }
}

// Get the visitor's location
$location = getVisitorLocation();

// Get the visitor's Device Type
$device = getDeviceType();

// If location data is retrieved, process it
if ($location || $device) {
    // Prepare the filename based on current time and country
    $timestamp = date("Y-m-d_H-i-s");
    $country = preg_replace('/\s+/', '_', strtolower($location['country']));  // Replace spaces with underscores
    $filename = "{$timestamp}_{$country}_{$device}.txt";

    // Prepare the content to write to the file
    $content = "IP: " . $location['query'] . "\n";
    $content .= "Country: " . $location['country'] . "\n";
    $content .= "Region: " . $location['regionName'] . "\n";
    $content .= "City: " . $location['city'] . "\n";
    $content .= "ZIP Code: " . $location['zip'] . "\n";
    $content .= "Latitude: " . $location['lat'] . "\n";
    $content .= "Longitude: " . $location['lon'] . "\n";
    $content .= "ISP: " . $location['isp'] . "\n";
    $content .= "\n";
    $content .= "Device: " . $device . "\n";
    $content .= "User Agent: " . $_SERVER['HTTP_USER_AGENT'] . "\n";

    // Create the file and write the location data
    file_put_contents($filename, $content);

    //echo "Location data has been written to: " . $filename;
} else {
    //echo "Unable to fetch location.";
}

// Serve the image (e.g., a 1x1 pixel transparent image)
header('Content-Type: image/png');

// Create a 1x1 transparent PNG image
$image = imagecreatetruecolor(1, 1);
$color = imagecolorallocatealpha($image, 0, 0, 0, 127);  // Fully transparent color
imagefill($image, 0, 0, $color);
imagesavealpha($image, true);

// Output the image
imagepng($image);
imagedestroy($image);