When installing memcache under win8 (64-bit), the error 'failed to install service or service already installed' and installation

Solution:

1. Find the cmd.exe file (c:windowssystem32cmd.exe)

2. Right-click cmd.exe to run as administrator

3. Put php_memcache.dll into the ext directory of php:

4. Add a line to php.ini: extension=php_memcache.dll

5.cmd enter the directory of memcached.exe, then execute the installation memcached.exe -d install and then start memcached.exe -d start

The above introduces the error "failed to install service or service already installed" when installing memcache under win8 (64-bit) and the installation, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.