MemCache requires PHP memcache extension to be loaded

Question

Memcache error on yii migrate.

exception 'yii\base\InvalidConfigException' with message 'MemCache requires PHP memcache extension to be loaded.'

in /Applications/AMPPS/www/G2G/vendor/yiisoft/yii2/caching/MemCache.php:220

Stack trace: #0 /Applications/AMPPS/www/G2G/vendor/yiisoft/yii2/caching/MemCache.php(116): yii\caching\MemCache->getMemcache()

I have memcached installed on my laptop and in my php its active as well. But still getting above error. Any reason to this?

Config

 'cache' => [
        'class' => 'yii\caching\MemCache',
        'servers' => [
            [
                'host' => '127.0.0.1',
                'port' => 11211
            ],
        ],
    ],

Beware of the subtle difference between memcache and memcached. You may need to configure that library to use memcached and not memcache — apokryfos
@apokryfos It was working few days back. I am getting this error today only. — Cristal

rob006 rob006 · Accepted Answer · 2018-05-24T08:25:20

If you have installed memcached, you need to configure your component to use it:

'cache' => [
    'class' => 'yii\caching\MemCache',
    'useMemcached' => true,
    'servers' => [
        [
            'host' => '127.0.0.1',
            'port' => 11211
        ],
    ],
],

MemCache::$useMemcached documentation:

Whether to use memcached or memcache as the underlying caching extension. If true, memcached will be used. If false, memcache will be used. Defaults to false.

MemCache requires PHP memcache extension to be loaded

2 Answers