There are three common ways to set up the Zend library folder:
1. Statically through the php.ini file
2. Using .htaccess
3. Or the more elegant way, using the set_include_path() function at runtime.
$ZendLibraryPath = '/path/to/Zend/library';
set_include_path(get_include_path() . PATH_SEPARATOR . $ZendLibraryPath);