Installation

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/SPL_Types.

A DLL for this PECL extension
is currently unavailable. See also the building on Windows section.