Description:

SASL is the Simple Authentication and Security Layer (as defined by
RFC 2222). It provides a system for adding plugable authenticating
support to connection-based protocols. The SASL extension for PHP
makes the Cyrus SASL library functions available to PHP. It aims to
provide a 1-to-1 wrapper around the SASL library to provide the
greatest amount of implementation flexibility. To that end, it is
possible to build both a client-side and server-side SASL
implementation entirely in PHP.

In PECL status of this extension is: alpha.