Yii2的Cookie主要是通过yii\web\Request
和yii\web\Response
进行操作的 ,通过\Yii::$app->response->getCookies()->add()
添加Cookie,通过\Yii::$app->request->cookies
读取Cookie.
<?php
//第一种方法
$cookie = new \yii\web\Cookie();
$cookie -> name = 'smister'; //cookie的名称
$cookie -> expire = time() + 3600; //存活的时间
$cookie -> httpOnly = true; //无法通过js读取cookie
$cookie -> value = 'cookieValue'; //cookie的值
\Yii::$app->response->getCookies()->add($cookie);
//第二种方法
$cookie = new \yii\web\Cookie([
‘name’ => ‘smister’,
‘expire’ => time() + 3600,
‘httpOnly ’ => true,
‘value’ => ‘cookieValue’
]);
\Yii::$app->response->getCookies()->add($cookie);
?>
<?php
$cookie = \Yii::$app->request->cookies;
//返回一个\yii\web\Cookie对象
$cookie->get(‘smister’);
//直接返回Cookie的值
$cookie->getValue(‘smister’); //$cookie[‘smister’] 其实这样也是可以读取的
//判断一个Cookie是否存在
$cookie->has(‘smister’);
//读取Cookie的总数
$cookie->count();//$cookie->getCount();跟count一样
?>
<?php
$cookie = Yii::$app->request->cookies->get(‘smister’);
//移除一个Cookie对象
\Yii::$app->response->getCookies()->remove($cookie);
//移除所有Cookie,目前好像不太好使
\Yii::$app->response->getCookies()->removeAll();
?>
对Cookie进行增删改时调用的response , 对Cookie读取时使用的是Request
Yii2的Session比较简单 ,直接通过\Yii::$app->session进行操作就好了
<?php
$session = \Yii::$app->session;
$session->set('smister_name' , 'myname');
$session->set('smister_array' ,[1,2,3]);
?>
<?php
$session = \Yii::$app->session;
//读取一个Session
$session->get('smister_name);
?>
<?php
$session = \Yii::$app->session;
//删除一个session
$session->remove(‘smister_name’);
//删除所有session
$session->removeAll();
?>
PHP/Yii2操作Cookie,常见问题以及注意事项
setcookie("name", "Larry", time()+3600);
$cookies = Yii::$app->response->cookies;
$cookies->add(new \yii\web\Cookie([
'name' => 'name',
'value' => 'Larry',
'expire'=>time()+3600
]));
创建名为"name"的cookie,赋值为"Larry",并且规定该cookie一小时后失效
expire这是一个UNIX时间戳,如果设置为0,或省略,该Cookie将在浏览器关闭时消失
获取Cookie
$name=$_COOKIE["user"]
$cookies = Yii::$app->request->cookies;//注意此处是request
$language = $cookies->get('user', 'defaultName');//设置默认值
检查Cookie
if(isset($_COOKIE["user"])){ }
$cookies = Yii::$app->request->cookies;
if (isset($cookies['user'])){ }
if ($cookies->has('user')){ }
if (isset($cookies['user'])){ }
删除Cookie
setcookie("user", "", time()-3600);//把失效日期设置为过去1小时
unset($_COOKIE['user']);
###Yii2
$cookies = Yii::$app->request->cookies;
$cookies->remove('user');
常见问题
A.Cookie的key不能含“.” 符号,会被解析成“_”,导致具有以上符号的key获取不到Cookie的bug
B.区分Yii2中 Yii::$app->request->cookies
和 Yii::$app->response->cookies
不仔细容易直接复制粘贴了。
1.如果把第一个用来设置Cookie,会报错:`The cookie collection is read only`
2.如果把第二个用来获取Cookie,程序正常执行未发生异常,但会获取不到Cookie,不容易察觉。。。
C.Cookie的key区分大小写
Yii::$app->request->cookies 和 Yii::$app->response->cookies在yii里面是分开的,前者是客户端(浏览器cookie),后者是服务器端。 所以: Yii::$app->request->cookies主要负责读取 Yii::$app->response->cookies主要负责创建
当然两者可以混用,但是根据业务需要, 取客户端cookie之前,在响应中应该写入或修改 如果两者分不清或者使用错误,那就是程序不OOP 思想不到位
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