What are some best practices for implementing a click tracking system for images in PHP?

Implementing a click tracking system for images in PHP involves capturing the click event on the image and storing the data in a database for analysis. One way to achieve this is by adding a tracking script to the image's HTML code that sends a request to a PHP script when the image is clicked. The PHP script can then log the click event and update the tracking data accordingly. 

// HTML code for the image with click tracking
<img src="image.jpg" onclick="trackClick('image.jpg')">

// JavaScript function to send a request to the PHP script
<script>
function trackClick(imageUrl) {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', 'track_click.php?url=' + imageUrl, true);
  xhr.send();
}
</script>

// PHP script (track_click.php) to log the click event
<?php
if(isset($_GET['url'])) {
  $imageUrl = $_GET['url'];
  
  // Log the click event in the database
  $db = new PDO('mysql:host=localhost;dbname=click_tracking', 'username', 'password');
  $stmt = $db->prepare('INSERT INTO clicks (image_url, click_time) VALUES (:image_url, NOW())');
  $stmt->bindParam(':image_url', $imageUrl);
  $stmt->execute();
}
?>

Keywords

image tracking PHP tracking system implementation best practices

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