PHP--TP开发模式

0、开启调试模式（WWW\tp5\application\config.php）

'app_debug' =>true,

1、连接数据库（...database.php）

// 数据库类型
'type' => 'mysql',
// 服务器地址
'hostname' => '127.0.0.1',
// 数据库名
'database' => 'testphp',
// 用户名
'username' => 'root',
// 密码

'password' => 'root',

2、控制器中书写代码（...application\index\controller\Index.php）

<?php
    namespace app\index\controller;
    //引入系统数据类
    use think\Db;
    //引入系统控制类
    use think\Controller;
    class Index extends Controller
    {
    public function index()
      {
    //从数据库中读取数据
    $data=Db::table('user')->select();
    //分配数据给页面
    $this->assign('data',$data);
    //加载页面
    return view();
      }

}

3、页面中（...index\view\index\index.html）

{volist name="data" id="value"}
<tr>
<td>{$value.id}</td>
<td>{$value.name}</td>
<td>{$value.pass}</td>
</tr>

{/volist}

二：数据库增删改查

<?php
namespace app\index\controller;

use think\Db;

class Index
{
    public function index()
    {
        return '<style type="text/css">*{ padding: 0; margin: 0; } .think_default_text{ padding: 4px 48px;} a{color:#2E5CD5;cursor: pointer;text-decoration: none} a:hover{text-decoration:underline; } body{ background: #fff; font-family: "Century Gothic","Microsoft yahei"; color: #333;font-size:18px} h1{ font-size: 100px; font-weight: normal; margin-bottom: 12px; } p{ line-height: 1.6em; font-size: 42px }</style><div style="padding: 24px 48px;"> <h1>:)</h1><p> ThinkPHP V5<br/><span style="font-size:30px">十年磨一剑 - 为API开发设计的高性能框架</span></p><span style="font-size:22px;">[ V5.0 版本由 <a href="http://www.qiniu.com" target="qiniu">七牛云</a> 独家赞助发布 ]</span></div><script type="text/javascript" src="https://tajs.qq.com/stats?sId=9347272" charset="UTF-8"></script><script type="text/javascript" src="https://e.topthink.com/Public/static/client.js"></script><think id="ad_bd568ce7058a1091"></think>';
    }
//查询
    public function query(){

        $date=Db::Query("select * from user where id=?",[2]);
        dump($date);
        echo Db::getLastSql();
    }
    //增
    public     function insert(){
        //$data=Db::execute("insert into user value(null,'user1','321')");
        //$data=Db::execute("insert into user value(null,?,?)",['user2','12345']);
        $data=Db::execute("insert into user value(null,:name,:pass)",['name'=>'user3','pass'=>'12345']);
        dump($data);
    }

    //删除
    public function deletes(){
        //$data=Db::execute("delete from user where id=?",[3]);
        //$data=Db::execute("delete from user where id=2");
        $data=Db::execute("delete from user where id=:id",['id'=>8]);
        dump($data);
    }
    //修改
    public function update(){
        //$data=Db::execute("update user set pass=? where id=?",["888",9]);
        $data=Db::execute("update user set pass=? where id=?",["666",9]);
        $data=Db::execute("update user set pass=:pass where id=:id",['pass'=>"555",'id'=>10]);
        dump($data);
    }
}

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