CakePHP Cookie 管理
使用 CakePHP 处理 Cookie 既简单又安全,CakePHP 有一个 CookieComponent 类用于管理 Cookie,该类提供了几种使用 Cookie 的方法:
要使用 cookie,在控制器中引入这两个类:
use Cake\Http\Cookie\Cookie; use Cake\Http\Cookie\CookieCollection;
必须首先创建 cookie 对象才能注册 cookie:
$cookie = new Cookie(name,value,expiration time,path,domain);
name和value是必填的,其他是可选的参数。
写入 Cookie
以下是写入 Cookie 的语法:
$cookie = new Cookie(name,value,expiration time,path,domain);
创建的 cookie 必须添加到 cookieCollection 中,如下所示:
$cookie = new Cookie('name','XYZ'); $cookies = new CookieCollection([$cookie]);
如果已经创建了 cookie 集合对象,则可以添加其余的 cookie,如下所示:
$cookies = $cookies->add($cookie);
读取 Cookie
要读取 cookie,需要使用 cookiecollection 中的 get() 方法。
语法
读取cookie的语法如下:
Cake\Http\Cookie\CookieCollection::get($name)
这将返回 cookiecollection 接口,要获取 cookie 的值,需要调用方法 getValue()。
Cake\Http\Cookie\CookieCollection Interface::getValue()
检查 Cookie
CookieCollection的has()方法会告诉你 cookie 是否存在:
Cake\Http\Cookie\CookieCollection::has($name)
echo $isPresent = $this->cookies->has('name');
删除 Cookie
CookieCollection的remove()方法用于删除cookie,以下是 remove() 方法的语法:
Cake\Http\Cookie\CookieCollection::remove($name)
remove() 方法接受一个参数,即要删除的 cookie 变量的名称。
示例 1
$test = $this->cookies->remove('name');
示例 2
修改config/routes.php文件,如下所示:
<?php use Cake\Http\Middleware\CsrfProtectionMiddleware; use Cake\Routing\Route\DashedRoute; use Cake\Routing\RouteBuilder; $routes->setRouteClass(DashedRoute::class); $routes->scope('/', function (RouteBuilder $builder) { $builder->registerMiddleware('csrf', new CsrfProtectionMiddleware([ 'httpOnly' => true, ])); $builder->applyMiddleware('csrf'); // $builder->connect('/pages',['controller'=>'Pages','action'=>'display', 'home']); $builder->connect('cookie/testcookies',['controller'=>'Cookies','action'=>'testCookies']); $builder->fallbacks(); });
新建src/Controller/Cookies/CookiesController.php文件,并将以下代码复制到该文件中:
<?php namespace App\Controller; use App\Controller\AppController; use Cake\Http\Cookie\Cookie; use Cake\Http\Cookie\CookieCollection; class CookiesController extends AppController{ public $cookies; public function testCookies() { $cookie = new Cookie('name','XYZ'); $this->cookies = new CookieCollection([$cookie]); $cookie_val = $this->cookies->get('name'); $this->set('cookie_val',$cookie_val->getValue()); $isPresent = $this->cookies->has('name'); $this->set('isPresent',$isPresent); $this->set('count', $this->cookies->count()); $test = $this->cookies->remove('name'); $this->set('count_afterdelete', $test->count()); } } ?>
新建src/Template/Cookie/test_cookies.php文件,并将以下代码复制到该文件中:
The value of the cookie is: <?php echo $cookie_val; ?> <br/> <?php if($isPresent): ?> The cookie is present. <?php else: ?> The cookie isn't present. <?php endif; ?> <br/> <?php echo "The count of cookie before delete is :" .$count; ?> <br/> <?php echo "The count of cookie after delete is :" .$count_afterdelete; ?>
访问http://localhost/cakephp4/cookie/testcookies执行上述示例,输出如下所示: