ubuntu 下使用 memcache ::delete() 报错解决方案
ubuntu10.10 desktop,安装了memcacheddelete 使用方式：
$mem = new Memcache;
$mem->connect('127.0.0.1',11211);
$mem->delete('key');
报错信息：
coinsight@insight-ubuntu:~$ php clear.php
PHP Notice:MemcachePool::delete(): Server 127.0.0.1 (tcp 11211, udp 0) failed with: CLIENT_ERROR bad command line format.Usage: delete <key>
(0) in /home/coinsight/clear.php on line 4
coinsight@insight-ubuntu:~$
解决方案：在使用delete方法时，如：$memcache->delete('key', 0) 加个参数 可以设为0(0表示立即删除)或者是其他一个数值 如10 表示10秒后删除
出错原因：
nibblebot at gmail dot com 09-Jul-2010 03:58
the Memcache::delete(key) function is broken on several combinations of memcached+pecl-memcache combinations.
pecl-memcache 2.2.5 + memcached 1.4.2 - Memcache::delete(key) WORKS
pecl-memcache 2.2.5 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORK
pecl-memcache 2.2.5 + memcached 1.4.4 - Memcache::delete(key) WORKS
pecl-memcache 2.2.5 + memcached 1.4.5 - Memcache::delete(key) WORKS
pecl-memcache 3.0.4 + memcached 1.4.2 - Memcache::delete(key) WORKS
pecl-memcache 3.0.4 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORK
pecl-memcache 3.0.4 + memcached 1.4.4 - Memcache::delete(key) DOES NOT WORK
pecl-memcache 3.0.4 + memcached 1.4.5 - Memcache::delete(key) DOES NOT WORK
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