?php /* * PHP简单利用token防止表单重复提交 * 此处理方法纯粹是为了给初学者参考 */ session_start(); var_dump($_POST); function set_token() { $_SESSION['token'] = md5(microtime(true)); var_dump($_SESSION['token']);
<?php /* * PHP简单利用token防止表单重复提交 * 此处理方法纯粹是为了给初学者参考 */ session_start(); var_dump($_POST); function set_token() { $_SESSION['token'] = md5(microtime(true)); var_dump($_SESSION['token']); } function valid_token() { $return = $_REQUEST['token'] === $_SESSION['token'] ? true : false; set_token(); return $return; } //如果token为空则生成一个token if(!isset($_SESSION['token']) || $_SESSION['token']=='') { set_token(); } if(isset($_POST['test'])){ if(!valid_token()){ echo "token error"; }else{ echo '成功提交,Value:'.$_POST['test']; } } ?> <form method="post" action=""> <input type="hidden" name="token" value="<?php echo $_SESSION['token']?>"> <input type="text" name="test" value="Default"> <input type="submit" value="提交" /> </form>