PHP/Cookie Session/Session Variables Delete

Delete session variable

   <source lang="html4strict">

<?php

  session_start();
  $_SESSION["username"] = "Joe";
  echo "Your username is: ".$_SESSION["username"].".
";
  
  /* Delete the session variable. */
  unset($_SESSION["username"]);
  /* Demonstrate that session variable is indeed gone. */
  echo "Username now set to: ".$_SESSION["username"].".";

?>

      </source>
   
  

Deleting Existing Session Variables

   <source lang="html4strict">

<?php

 session_start () ;
 session_register ( "A" ) ;
 session_register ( "B" ) ;
 session_register ( "C" ) ;
 
 $A = "AAA";
 $B = "BBB";
 $C = "CCC";
 $result = session_destroy () ;
 if ($result=1) {
    echo "The session is destroyed! " , "\n " ;
 } else {
    echo "The session could not be destroyed. " , " \n" ;
 }
 
 echo $pop;

?>

      </source>