src/Cache.php
/**
     * Throw an exception if any of the keys are not valid
     *
     * @param array|iterable $keys
     *
     * @return void
     */
Throw an exception if any of the keys are not valid
@param array|iterable $keys

@return void
Throw an exception if any of the keys are not valid @param array|iterable $keys @return void
protected function assertValidKeys($keys)
    {
        foreach ($keys as $key) {
            if ($this->validKey($key) === false) {
                throw new InvalidKeyException($key);
            }
        }
    }
protected function assertValidKeys ( $ keys ) { foreach ( $ keys as $ key ) { if ( $ this -> validKey ( $ key ) === false ) { throw new InvalidKeyException ( $ key ) ; } } }
Throw an exception if any of the keys are not valid
 @param array|iterable $keys
Throw an exception if any of the keys are not valid @param array|iterable $keys