一直用java读写memcached没出问题 
今天与php系统对接的时候，一直取不到php存储的元素，但是php又取得到java这边存储的元素。 
最后装了memadmin，查看了一下，php存储的元素的flags全是0，而java使用类库存储的字符型的flags是32。让php修改下存储的flags后问题解决。 
附带下几种类型的flags：
java代码  
public static final int marker_byte = 1; public static final int marker_boolean = 8192; public static final int marker_integer = 4; public static final int marker_long = 16384; public static final int marker_character = 16; public static final int marker_string = 32; public static final int marker_stringbuffer = 64; public static final int marker_float = 128; public static final int marker_short = 256; public static final int marker_double = 512; public static final int marker_date = 1024; public static final int marker_stringbuilder = 2048; public static final int marker_bytearr = 4096;