This extension is
EXPERIMENTAL. The behaviour of this extension—including
the names of its functions and any other documentation surrounding this
extension—may change without notice in a future release of PHP.
This extension should be used at your own risk.
Note: This extension is not
available on Windows platforms.
Note:
This extension has been moved to the
» PECL repository and is no longer bundled with
PHP as of PHP 5.0.0.