php 生成随机字符串的简单函数

function makeRandString($length)  {  
            $chr = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');
             
            $string = "";
            for ($i=0 ; $i<$length ;$i++){
                $randNum = rand(0, 25);
                $string .= $chr[$randNum];
            }
            return $string;
        }

一段php生成简单的随机字符串的函数，仅起到启发性作用。如想实现更复杂的，可以自己再尝试写一写

参考文章 http://developer.51cto.com/art/201009/223578.htm