Install Memcached for XAMPP on macOS

memcached-installation.txt

 1. Install libmemcached with brew:
    > brew install libmemcached
    
 2. Install memcached with pecl:
  - > sudo /Applications/XAMPP/xamppfiles/bin/pecl install memcached 
  - When prompted for the libmemcached directory, press 'Enter' and the installer will automatically find it.
   
 3. Add the memcached extension to your php.ini file:
  - > sudo vim /Applications/XAMPP/xamppfiles/etc/php.ini 
  - Add 'extension=memcached.so' to the file

 4. Restart your Apache server (either use the GUI or run):
  > sudo apachectl restart
    
 5. Start memcached with brew:
  > brew services start memcached