uopz releases are hosted by PECL and the source code by » github, the easiest route to installation is the normal PECL route: » https://pecl.php.net/package/uopz.
Windows users can download prebuilt release binaries from the » PECL website.
As of uopz 5.0.0 the extension must be loaded as extension. Before this version it must be loaded as zend_extension.