public function hasMany(array $keys)
    {
        $values = $this->getMany($keys);

        return array_map(function ($value) {
            return ! is_null($value);
        }, $values);
    }
public function hasMany(array $keys)
    {
        $values = $this->getMany($keys);

        return array_map(function ($value) {
            return ! is_null($value);
        }, $values);
    }
public function hasMany ( array $ keys ) { $ values = $ this -> getMany ( $ keys ) ; return array_map ( function ( $ value ) { return ! is_null ( $ value ) ; } , $ values ) ; }
Determine if an array of items exists in the cache.

@param  array  $keys
@return array
Determine if an array of items exists in the cache .