PHP: How to Install Zend Framework v1 (zf1)
You can install Zend Framework v2 as follows:
composer require zendframework/zendframework
However Zend Framework v1 has already been obsolete, therefore when you want to install it manually, you need to download the library from GitHub, and copy (move) to your application directory.
Download Zend Framework v1 library from GitHub (Note that the following example is aimed for minimal package. If you want to install the full package, delete a -minimal portion. Also note that the following command line is just one line, even though it has new lines.)