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Homephp教程php手册ThinkPHP验证码使用简明教程

一、首先需要在控制器中加入验证码方法admin/Lib/Action/LoginAction.class.php
知识点:
1、ob_clean函数用途
2、import方法调用think默认类库
3、Image类buildImageVerify方法使用

代码如下:

复制代码 代码如下:


Public function verify(){
 ob_clean();
 //ob_clean函数 清空先前输出
 import('ORG.Util.Image');
 //import调用的是message/ThinkPHP框架目录下的扩展包Extend/Library/ORG/Util/中的Image.class.php类文件
 Image::buildImageVerify();
 //调用buildImageVerify方法生成验证码,默认参数为($length=4, $mode=1, $type='png', $width=48, $height=22, $verifyName='verify'),有兴趣的朋友可以研究下Image类
}

二、在模板文件中加入验证码模块admin/Tpl/Login/index.html
知识点:
1、验证码图片调用
2、js相关运行流程了解
3、__PUBLIC__常量

在密码输入框后加入如下代码:

复制代码 代码如下:







//__PUBLIC__常量可以在页面加载后,“查看页面源文件”中找到定义的__PUBLIC__目录,默认为项目根目录message下的Public目录,下面会讲解如何自定义__PUBLIC__系统常量
//jquery文件,只有加载了这个文件才可以调用jquery的方法

//这里的具体代码会在下面贴出,其实只是定义了一个change_code函数,也就是更换验证码的异步操作(可以在不刷新页面的情况下更换)

Message Board BackGround

 


  

简易后台登录系统


  用户名:
  

  密码:
  

  验证码:
  //这里需要注意将type设置为code,name命名为code
  ThinkPHP验证码使用简明教程
  //img标签下的src就是调用Login控制器中的veryfy方法
  //后面的两个参数留空是必须的,其中第2个没实际意义,主要是为了第3个参数留空,这样设置可以取消伪静态后缀名,否则默认的伪静态后缀名为html,将会导致无法正常加载图片
  看不清
  //这里调用了个
  

  
 




login.js文件在message/Public/目录下
文件内容如下:

复制代码 代码如下:


verifyURL = 'http://localhost/message/admin.php/Login/verify';
//定义验证码路径
function change_code(obj){
 $("#code").attr("src",verifyURL+'/'+Math.random());
 //动态生成验证码方法,有兴趣的朋友可以深入研究下jq方法
 return false;
}

另:__PUBLIC__文件定义在message/admin/Conf/config.php
在配置中,加入如下内容,即可改变__PUBLIC__路径
配置如下:

复制代码 代码如下:


//常量相关配置
'TMPL_PARSE_STRING' => array(
 '__PUBLIC__' => __ROOT__ . '/' . APP_NAME . '/Public',
 //路径改变为message/admin/Public,刷新页面,验证码依然可以刷新,则表明js生效,也可“查看页面源文件”
),

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