How can PHP be used to read the referrer information from JavaScript code embedded on user websites?

To read the referrer information from JavaScript code embedded on user websites, you can pass the referrer data to a PHP script using AJAX. The PHP script can then process the referrer information and perform any necessary actions based on it. 

<?php
if(isset($_SERVER['HTTP_REFERER'])) {
    $referrer = $_SERVER['HTTP_REFERER'];
    
    // Process the referrer information as needed
    // For example, log the referrer to a file or database
    file_put_contents('referrer_log.txt', $referrer . "\n", FILE_APPEND);
}
?>

Keywords

PHP JavaScript referrer information embedded code user websites

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