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/crack.

In order to use these functions you must compile
PHP with Crack support by using the –with-crack[=DIR] configuration
option.

Windows users will enable php_crack.dll inside of php.ini in order to use these functions. A
DLL for this
PECL extension
is currently unavailable. See also the building on Windows section.