How to use HTTP_REFERER and HTTP_USER_AGENT_PHP Tutorial

​

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

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http://www.bkjia.com/PHPjc/445349.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445349.htmlTechArticleif (isset($_SERVER[HTTP_REFERER])) { print The page you were on previously was {$_SERVER[ HTTP_REFERER]} ; } else { print You didnt click any links to get here ; } ? Click me!...