html 中

    <img class="cimg" src="http://www.mamicode.com/__URL__/verify?id=2>" width="50" height="22" onclick=""http://blog.51cto.com/viewpic.php?refimg=" + this.src=http://www.mamicode.com/‘__URL__/verify/‘+Math.random()" /></td>

在控制器中

        //验证码

public function verify() {

$type = isset($_GET[‘type‘]) ? $_GET[‘type‘] : ‘gif‘;

import("@.ORG.Util.Image");

Image::buildImageVerify(4, 1, $type);

}