HTTP_REFERER and HTTP_USER_AGENT : HTTP_REFERER « HTML « PHP

1. PHP
2. HTML
3. HTTP_REFERER

HTTP_REFERER and HTTP_USER_AGENT

 
<?php
            if (isset($_SERVER['HTTP_REFERER'])) {
                    print "The page you were on previously was {$_SERVER['HTTP_REFERER']}<br />";
            } else {
                    print "You didn't click any links to get here<br />";
            }
    ?>

    <a href="refer.php">Click me!</a>
  
  

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