This » PECL extension is not bundled with
PHP. Information for installing this PECL extension may be found in
the manual chapter titled Installation of PECL extensions. Additional information
such as new releases, downloads, source files, maintainer
information, and a CHANGELOG, can be located here: » https://pecl.php.net/package/lzf.
In order to use these functions you must compile
PHP with lzf support by using the –with-lzf[=DIR] configure option. You
may also pass –enable-lzf-better-compression to
optimize LZF for space rather than speed.
Windows users will enable php_lzf.dll inside of php.ini in order to use these functions. A
DLL for this
is currently unavailable. See also the building on Windows section.