Make div appear to only a few users of the site

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1

I wanted to make a div that only appears to some portion of people who access my site, how do I do this?

php html
  • 1

    What is the criterion of segregation?

  • You need guarantees that people don’t access this or just a facilitator to hide what should not be seen?

  • I need it to be like a draw of who will see the ad.

1 answer

3

If it is for example based on a user being logged in could be done this way:

I divide my page into small php files (with pure HTML elements) and check if the user is logged in if yes the page will be composed with a logout button if not with login and registration buttons.

session_start();
    if((!isset($_SESSION['email']) == true) and (!isset($_SESSION['pass']) == true)){
            require_once 'components/modals/login-modal.php';
            require_once 'components/modals/create-account-modal.php';
        }else{
            require_once 'components/modals/logout-modal.php';
        }

This way the Divs will be segmented

It is also possible to segregate based on other requirements such as the user’s browser:

  <?php
    $useragent = $_SERVER['HTTP_USER_AGENT'];

  if (preg_match('|MSIE ([0-9].[0-9]{1,2})|',$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = 'IE';
  } elseif (preg_match( '|Opera/([0-9].[0-9]{1,2})|',$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = 'Opera';
  } elseif(preg_match('|Firefox/([0-9\.]+)|',$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = 'Firefox';
  } elseif(preg_match('|Chrome/([0-9\.]+)|',$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = 'Chrome';
  } elseif(preg_match('|Safari/([0-9\.]+)|',$useragent,$matched)) {
    $browser_version=$matched[1];
    $browser = 'Safari';
  } else {
    $browser_version = 0;
    $browser= 'other';
  }
?>

<html>
    <head>
        <title></title>
    </head>
    <body>
         <?php 
              if($browser == 'Safari'){
                  echo '<span id="#internal">Safari</span>';
              }else{
                  echo '<span>Outro navegador</span>';
              }
         ?>
    </body>
</html>

Based on the string contained in $_SERVER['HTTP_USER_AGENT'] (Super Global) it is possible to identify by comparison of strings which Browser, Version and even OS (in some cases).

  • It’s because I’m making a website and I want to advertise, but the site will only have about one page and I want to put my own form of advertising, and in case in the future the site will have several advertising requests, so I wanted to make a system that would do for example like "20% of the people who access this advertisement,other twenty will see another advertisement".

  • @Luvinicius, what would be the criterion to achieve this 20% (place, age, sex...). Even by default, these 20% would be based on the total of previous accesses - I believe it is the simplest estimate to apply.

  • But there is no way to "draw" the 20% that will see the advertisement?

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