windows xampp內建環境中所安裝的php本身是沒有 memcache擴充的
需要到http://downloads.php.net/pierre/下載下傳對應的版本
下面是我的內建環境參數
###### ApacheFriends XAMPP version 1.7.7 ######
+ Apache 2.2.21
+ MySQL 5.5.16 (Community Server)
+ PHP 5.3.8 (VC9 X86 32bit thread safe) +PEAR
+ XAMPP Control Panel Version 2.5 fromwww.nat32.com
+ (BETA) XAMPP Control Panel Version 3.0.2 bySteffen Strueber (not in the USB & lite version)
seehttp://www.apachefriends.org/f/viewtopic.php?f=16&t=46743
+ XAMPP Security
+ OpenSSL 1.0.0e
+ phpMyAdmin 3.4.5
+ ADOdb 5.14
+ Mercury Mail Transport System v4.62 (not inthe USB & lite version)
+ FileZilla FTP Server 0.9.39 (not in the USB& lite version)
+ Webalizer 2.23-04 (not in the USB & liteversion)
+ Perl 5.10.1 (not in the USB & liteversion)
+ Mod_perl 2.0.4 (not in the USB & liteversion)
+ Tomcat 7.0.21 (not in the USB & liteversion)
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所下載下傳的版本是 php_memcache-2.2.6-5.3-vc9-x86.zip
下載下傳後解壓把php_memcache.dll 放到 xampp/php/ext/目錄下
然後打開 xampp/php/php.ini 在裡面加入一句: extension=php_memcache.dll
重新開機apache
輸出phpinfo();若有memcache擴充,證明擴充安裝成功