Checking for Cookie Support from PHP

Checking for Cookie Support from PHP

• 
    < ? php
       if(!isset($_GET['testcookie']))
       {
         setcookie("testcookie", "test value");
         header("Location: {$_SERVER["PHP_SELF"]}?testcookie=1");
         exit;
       }
       else
       {
         if(isset($_COOKIE['testcookie']))
         {
           setcookie("testcookie");
           echo "You have cookies enabled";
         }
         else
         {
           echo "You do not support cookies!";
         }
       }
    ? >

Reading all cookie values

• 
    < ? php
       foreach ($_COOKIE as $cookie_name => $cookie_value)
       {
         print "$cookie_name = $cookie_value
  ";
       }
    ? > 

Still Logged In with cookie

• < ? php
       $auth = $_COOKIE['auth'];
       header( "Cache-Control:no-cache" );
       if( ! $auth == "ok" )
       {
         header("Location:login.php" );
         exit();
       }
    ? > 

Printing a cookie value

•  < ? php
       print 'Hello, ' . $_COOKIE['userid'];
     ?> 

Reading a cookie value

•   < ? php
      if (isset($_COOKIE['flavor']))
      {
         print "You ate a {$_COOKIE['flavor']} cookie.";
      }
    ?>