/**
* Factory function that creates a memcached client object.
- * The idea of this is that it might eventually detect and automatically
- * support the PECL extension, assuming someone can get it to compile.
+ *
+ * This always uses the PHP client, since the PECL client has a different
+ * hashing scheme and a different interpretation of the flags bitfield, so
+ * switching between the two clients randomly would be disasterous.
*
* @param $params array
*