Easy way to install PHP-Memcache in windows......

Follow this steps:
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In Vista, you should set memcached.exe to Run as administrator
Install the service using the following cmd:

1 c:/memcached/memcached.exe -d install

Start the server from the Services or else running one of the following cmd:

option 1: c:/memcached/memcached.exe -d start

or
option 2: net start "memcached Server"

There is one more thing left to do. By default, server is set to 64Mb memory limit, which is too small. To correct, go to Registry Editor and find key

follow====> HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/memcached Server .

Change the ImagePath entry to:

follow====> “C:/memcached/memcached.exe” -d runservice -m 512