基于ThinkPHP的开发笔记3-登录功能(转)

1、前台登录用的form

<form id='form_login' action="{:U('runLogin')}" method="post">
    <div class="row">
        <label class="field">登陆名
        </label>
        <div class="item">
            <input id="address" class="basic-input" name="uname" maxlength="70" size="46"/>
        </div>
    </div>
    <div class="row">
        <label class="field">密码
        </label>
        <div class="item">
            <input id="pwd" class="basic-input" type="password"  name="pwd" maxlength="70" size="46"/>
        </div>
    </div>
    <div class="row">
        <div class="item">
            <input type="checkbox" name='auto' class='auto' id='auto' checked='1'/>
            <label for="auto">记住我，下次自动登录</label>
        </div>
    </div>
    <hr class="hrline"/>
    <div class="row footer">
        <div class="item">
            <input class="loc-btn" type="button" id="submit_form" value="提交"/>
            <input class="lnk-flat" type="button" id="cancel_form" value="取消"/>
        </div>
    </div>
</form>

2、后台验证用户名密码，如果登录成功则写入session和cookie，如果cookie不设置失效时间，默认是关闭全部浏览器时失效

public function runLogin(){
    if(!$this->isPost()){
        halt('页面不存在');
    }
    $uname=I('post.uname');
    $pwd=I('post.pwd','','md5');
    $auto=I('post.auto');
 
    $condition = array(
        'uname' => $uname,
        'pwd'=> $pwd
        );
    $user=M('User')->where($condition)->find();
    if($user){
        $uid=$user[id];
        if($user[nickname]){
            $uname=$user[nickname];
        }
        session('uid',$user[id]);
        session('uname',$uname);
        if($auto=='on'){
            cookie('uid',$uid,30*24*3600);
            cookie('uname',$uname,30*24*3600);
        }
        header('Content-type:text/html;Charset=UTF-8');
        redirect(__APP__);
    }else{
        header('Content-type:text/html;Charset=UTF-8');
        redirect(U('login'),2,'用户名或密码错误,正在跳转回登陆页...');
    }
}

3、首页控制器判断session或者cookie是否存在

<?php
// 首页控制器
class IndexAction extends Action {
    public function index(){
        $data=session('uname');
        if($data){
            $this->data = $data;
        }else if(cookie('uname')){
            $this->data = cookie('uname');
        }
        $this->display();
    }
}

4、首页页面模板中，使用标签判断用户信息，显示不同的内容

<div id='login' class='right'>
    <empty name="data">
            <a href='{:U('Login/login')}'>登录</a>
            <a href='{:U('Login/register')}'>注册</a>
        <else/>
            <a href='#'>欢迎 {$data}</a>
            <a href='{:U('Login/logout')}'>注销</a>
    </empty>                  
</div>

5、注销登录

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public function logout(){
    session('uid',null);
    session('uname',null);
    cookie('uid',null);
    cookie('uname',null);
    redirect(__APP__);
}