Fixes #2264: `CookieCollection::has()` will return false for expired or removed cookies

framework/CHANGELOG.md

@@ -20,6 +20,7 @@ Yii Framework 2 Change Log
 - Bug #3194: Date formatter works only for timestamps in the year range 1970 to 2038 (kartik-v)
 - Bug #3204: `yii\di\Container` did not handle the `$config` parameter well in case when it does not have a default value (qiangxue)
 - Bug #3216: Fixed the bug that `yii.activeForm.destroy()` did not remove `submit` event handlers (qiangxue)
+- Enh #2264: `CookieCollection::has()` will return false for expired or removed cookies (qiangxue)
 - Enh #2837: Error page now shows arguments in stack trace method calls (samdark)
 - Enh #3008: Added `Html::errorSummary()` (qiangxue)
 - Enh #3088: The debug and gii modules will manage their own URL rules now (hiltonjanfield, qiangxue)

framework/web/CookieCollection.php

@@ -102,12 +102,15 @@ class CookieCollection extends Object implements \IteratorAggregate, \ArrayAcces
 
     /**
      * Returns whether there is a cookie with the specified name.
+     * Note that if a cookie is marked for deletion from browser, this method will return false.
      * @param string $name the cookie name
      * @return boolean whether the named cookie exists
+     * @see remove()
      */
     public function has($name)
     {
-        return isset($this->_cookies[$name]);
+        return isset($this->_cookies[$name]) && $this->_cookies[$name]->value !== ''
+            && ($this->_cookies[$name]->expire === null || $this->_cookies[$name]->expire >= time());
     }
 
     /**