复制代码 代码如下:function T_rndstr($length=””){//返回随机字符串 $str=”ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz”; if($length==””){ return str_shuffle($str); }else{ return substr(str_shuffle($str),-$length); } } $T_k1=T_rndstr();//随机密匙1 $T_k2=T_rndstr();
