Cookie在点击按钮时过期

我们可以在php中添加事件吗?就像我想退出一样。销毁我当前的会话，并删除现有的cookie点击一个按钮。按钮表单动作对应于相同的页面drum.php

<?php
$h=0;
if(isset($_COOKIE["name"])) {
  if($h==0) {
    session_start();
    if(isset($_SESSION['views'])) {
      $_SESSION['views']=$_SESSION['views']+1;
    } else {
      $_SESSION['views']=1;
    }
    echo "You have been logged in as: ".$_COOKIE["name"].".Your session will expire in "."5min."."You have viewed this page ".$_SESSION['views'];
  } else {
    session_destroy();
    setcookie("name",$name,time()-25);
  }
} else {
  echo "<form action='drum.php' method='post'><input type='text' name='name'></input>          `   </input><input type='submit' value='Log in'></input></form>";
  $name=$_POST["name"];
  $expire=time()+2*60;
  setcookie("name",$name,$expire);
}
?>