PHP有个pecl memcached扩展，这是大家默认的选择，对绝大多数应用来说，其实已经够用了，出于学习研究的目的，在朋友小叶的要求下，尝试了利用libmemcached模块来开发一个PHP的扩展。
对于memcached，不在这里多说了，更多的文档可以参照我另外的blog文章或者去memcached官方，在官方文档中，我们可以找到各种语言的APIs，包括已有的pecl memcached API，另外还有Ruby、Perl、C#等API，这次需要用的是C的API，据小叶说，有另外的测试证明基于C API中libmemcached写的Ruby扩展性能比基于libevant写的PHP Pecl Memcached效率高出20倍，这个真实性不去考证了，只准备测试一下用libmemcached来写另外一个PHP的扩展。
这里准备按照最常规的流程来完成这个PHP扩展的开发。目前完整的模块还未写完，只完成了一个测试接口和connect()接口，请有兴趣的朋友随时关注我的更新。
Pecl Memcached Extension基于libevant?
Memcached 基于libevant，Pecl Memcached Extension是自己实现了Memcached的协议解析吧，而没有使用libmemcached，这和libevant似乎没有太大关系，3.0+的Pecl Memcached Extension 加入了新的MemcachePool实现，代码写得挺不错的，不过两者的效率倒还没测试过，期待你的新扩展出现…:)
刚才简单看了一下pecl memcached扩展的代码(http://cvs.php.net/viewvc.cgi/pecl/memcache/memcache.c?content-type=text%2Fplain&view=co)，的确如楼上朋友所说，倒是了解到memcached是用到libevent的，具体的从这里可以看到：http://cvs.php.net/viewvc.cgi/pecl/memcache/README?revision=1.3.2.1&view=markup
libmemcached 刚推出来。 ruby 就用它开发了 ruby 的memcache的最新扩展，测试了说性能很好。呵呵我也是看介绍这样说的。Michael 大哥人很好。在这里也要谢谢Michael 对我的帮助。也期待你的libmemcache 新扩展。今天我要搬家。顺便来看看。我顶
为什么类似的文章老是没有下文呢 。。汗。。。
[Comment ID #26048 Will Be Quoted Here]
抱歉，没有来得及更新，asd 朋友告知有了一个已经开发好的，放我一下子丧失了太多热情，又因为最近实在事情太多，把热情和紧急度更高的事情先安排了，空了一定会补齐的。
呵呵。我是asd 。老大忙。肯定没那么快更新拉。你以为老大专业出教程的呀？ 老大不用急。哈哈
[Comment ID #26053 Will Be Quoted Here]
本来是帮asd顺手给弄出来的，结果没想后来因工作耽误了，ads兄弟确跑到我前面去了，对不住大家了，朋友们可以去asd的站上看他刚写出来的完整的扩展代码，地址在这里： http://www.laoniphp.com/
Michael大哥,请教个问题:
在编写扩展的时候
PHP_FUNCTION(test)
{
zval *var;
char *st=””;
int st_len=0;
zend_bool i = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, “z|sb”, &var,&st, &st_len,&i) == FAILURE)
{
RETURN_FALSE;
}
//我想让程序退出,就好像调用php的 exit()或die()函数; 请问这里该怎么实现呢？
}
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