Authnum.class.php 下载 复制代码 代码如下: <?php session_start(); class Authnum { //图片对象、宽度、高度、验证码长度 private $im; private $im_width; private $im_height; private $len; //随机字符串、y轴坐标值、随机颜色 private $randnum; private $y; private $randcolor; //背景色的红绿蓝,默认是浅灰色 public $red=238; public $green=238; public $blue=238; /