php中使用随机数

标签：c   tar   a   使用   art   for   

<?php
session_start();
$s = 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","0","1","2","3","4","5","6","7","8","9");
$r="";

for($i=1;$i<=4;$i++){
$r .= $s[rand(0,count($s)-1)];
}

不要小看  要是叫你写你还写不出来的

php中使用随机数,布布扣,bubuko.com

php中使用随机数

标签：c   tar   a   使用   art   for   

原文地址：http://www.cnblogs.com/RBBiog/p/3736864.html