thinkphp3和thinkphp5的区别

S=>cache，C=>config，M/D=>model，U=>url，I=>input，E=>exception，L=>lang，A=>controller，R=>action

$this->display() => return view()/return $this->fetch();

$this => Db::table($this->table)

{$info.status ? $info.msg : $info.error}还支持这种写法：{$varname.aa ?? 'xxx'}或{$varname.aa ?: 'xxx'}

$validate = new Validate(['name' => 'require|max:25','email' => 'email']);
$data = ['name' => 'thinkphp','email' => 'thinkphp@qq.com'];
if(!validate->check($data)){
debug::dump($validate->getError());
}

$list = model('User')->where('status',1)->paginate(10);
$page = $this->render();
$this->assign('_list',$list);
$this->assign('_page',$page);
return $this->fetch();

<div>{$_page}</div>

//添加单条数据$User = M('User');
$data['name'] = 'ThinkPHP';
$data['email'] = 'ThinkPHP@gmail.com';
$User->create($data);
$User->add($data);//添加多条数据$dataList[] = array('name'=>'thinkphp','email'=>'thinkphp@gamil.com');
$dataList[] = array('name'=>'onethink','email'=>'onethink@gamil.com')
$User->addAll($dataList);

//添加单条数据$data = ['foo' => 'bar', 'bar' => 'foo'];
Db::table('think_user')->insert($data);//添加多条数据$data = [
    ['foo' => 'bar', 'bar' => 'foo'],
    ['foo' => 'bar1', 'bar' => 'foo1'],
    ['foo' => 'bar2', 'bar' => 'foo2']
];
Db::name('user')->insertAll($data);

$User = M("User"); // 实例化User对象// 要修改的数据对象属性赋值
$data['name'] = 'ThinkPHP';$data['email'] = 'ThinkPHP@gmail.com';
$User->where('id=5')->save($data); // 根据条件更新记录
where('id=5')->setField('name','ThinkPHP');
$data = array('name'=>'ThinkPHP','email'=>'ThinkPHP@gmail.com');// 更改用户的name值
$User-> where('id=5')->setField($data);更改用户的name和email的值
$User->where('id=5')->setDec('score',5); // 用户的积分减5
$User->where('id=5')->setInc('score',3); // 用户的积分加3

Db::table('think_user')->update(['name' => 'thinkphp','id'=>1]);//更新数据表中的数据
Db::table('think_user') ->where('id',1) ->setField('name', 'thinkphp');//更新某个字段的值
Db::table('think_user')->where('id', 1)->setInc('score',5);// score 字段加 5
Db::table('think_user')->where('id', 1)->setDec('score', 5);// score 字段减 5
Db::table('think_user')->where('id', 1)->setInc('score', 1, 10);//支持延时更新

$User->delete('1,2,5'); // 删除主键为1,2和5的用户数据
$User->where('status=0')->delete(); // 删除所有状态为0的用户数据

// 根据主键删除Db::table('think_user')->delete(1);
Db::table('think_user')->delete([1,2,3]);// 条件删除    
Db::table('think_user')->where('id',1)->delete();
Db::table(&#39;think_user&#39;)->where(&#39;id&#39;,&#39;<&#39;,10)->delete();

<?php
namespace Home\Controller;
use Think\Controller;
class IndexController extends Controller 
{    public function hello()
    {        echo &#39;hello,thinkphp!&#39;;
    }
}

namespace app\index\controller;
class Index
{    public function index()
    {        return 'hello,thinkphp!';
    }
}

IndexController.class.php

Index.php

return $this->fetch('index/hello');

return view('index/hello');

M('User')->where(['name'=>'thinkphp'])->find();

db('User')->where('name','thinkphp')->find();

User::get(1); 
User::all();
User::where('id','>',10)->find();

REQUEST_METHOD IS_GET IS_POST IS_PUT IS_DELETE IS_AJAX __EXT__ COMMON_MODULE MODULE_NAME CONTROLLER_NAME 
ACTION_NAME APP_NAMESPACE APP_DEBUG MODULE_PATH等