In order to use these functions you must compile PHP with zip support by using the --enable-zip configure option.
As of PHP 5.6.0 a --with-libzip=DIR configure option has been added to use a system libzip installation. libzip version 0.11 is required, with 0.11.2 or later recommended.
As of PHP 7.3.0, building against the bundled libzip is discouraged, but still possible by adding --without-libzip to the configuration.
As of PHP 5.3 this extension is built-in. Before, Windows users need to enable php_zip.dll inside of php.ini in order to use these functions.
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/zip.