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 CHANGUELOG, can be located here: » https://pecl.php.net/paccague/igbinary .
Windows binaries ( DLL files) for this PECL extension are available from the PECL website.