ubuntu下memcache类中delete失败的原因
ubuntu10.10 desktop,安装了memcached，后来写了一个php文件来测试memcache：<?php$mem = new Memcache;$mem->connect('127.0.0.1',11211);$mem->delete('key');?>
结果在delete的时候老是报错：
coinsight@insight-ubuntu:~$ 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 4coinsight@insight-ubuntu:~$
查找了半天原因发现在delete后面加个参数就可以了，而且这个参数必须是0，其它的值同样报错：
<?php$mem = new Memcache;$mem->connect('127.0.0.1',11211);$mem->delete('key',0);?>
后来百度+GG找，原因如下：
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) WORKSpecl-memcache 2.2.5 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORKpecl-memcache 2.2.5 + memcached 1.4.4 - Memcache::delete(key) WORKSpecl-memcache 2.2.5 + memcached 1.4.5 - Memcache::delete(key) WORKSpecl-memcache 3.0.4 + memcached 1.4.2 - Memcache::delete(key) WORKSpecl-memcache 3.0.4 + memcached 1.4.3 - Memcache::delete(key) DOES NOT WORKpecl-memcache 3.0.4 + memcached 1.4.4 - Memcache::delete(key) DOES NOT WORKpecl-memcache 3.0.4 + memcached 1.4.5 - Memcache::delete(key) DOES NOT WORK
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