Think PHP:
多例/多应用模式：
1.创建项目目录；
2.把controller目录放入项目目录中；
3.config目录app.php修改配置项 auto.multi.app改为true；
4.控制器命名空间填上上新建项目目录名
访问： 域名/index.php/项目名/文件名/函数名；
调试模式： 开启.env文件将APP_DEBUG = 改为true
Trace调试辅助工具：开启全局中间件 middleware.php 增加 think\middleware\TraceDebug
数据库增删改查语句：
表达式：
实例
<?php
//访问地址：域名/index.php/sql/index/函数名
namespace app\sql\controller;
use app\BaseController;
use think\facade\Config;
use think\facade\Db;
class index extends BaseController
{
//query执行原生mysql语句 查询
public function a()
{
$data = Db::query("select * from staff");
foreach($data as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
//execute执行原生mysql语句 新增 更改
public function b()
{
//增加
$data = Db::execute("insert into staff set `name`='一灯大师',`age`='1',`sex`='1' ,`position`='驸马爷',`mobile`='13211111115'");
if ($data > 0) {
echo '成功添加'.$data.'条记录';
}
//更改
// $data = Db::execute("update staff set `name`='hongjicaho' where `staff_id`=2 ");
// if ($data > 0) {
// echo '成功添加'.$data.'条记录';
// }
}
public function c()
{
// 单条查询
// $data = Db::table('staff')->where('staff_id','>',4)->find();
// echo "<li>{$data['staff_id']}:{$data['name']}---{$data['age']}---{$data['position']}</li>";
// 多条查询
$data = Db::table('staff')->select();
foreach($data as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
public function d()
{
//查询字段的值
$data = Db::table('staff')->where('staff_id',6)->value('name,mobile');
print_r($data);
}
public function e()
{
//查询一列的值
$data = Db::table('staff')->where('staff_id','>',5)->column('name','staff_id'); //column 第一个为值，第二个为键名；
// print_r($data);
foreach ($data as $staff_id => $name) {
echo $staff_id.'='. $name .'<br>';
}
}
public function f()
{
//添加
$data = ['name'=>'洪大师','age'=>18,'sex'=>1,'position'=>'抓鬼大师','mobile'=>'15626475734','hiredate'=>time()];
$insert = Db::table('staff')->insert($data);
if ($insert > 0) {
echo '成功添加'.$insert.'条记录';
}
}
public function g()
{
// 添加或修改save 自动判断是新增还是更新数据（以写入数据中是否存在主键数据为依据）。
// $data = ['name'=>'洪大师','age'=>18,'sex'=>1,'position'=>'抓鬼大师','mobile'=>'15626475734','hiredate'=>time()];
// $save = Db::table('staff')->save($data);
// if ($save > 0) {
// echo '成功添加'.$save.'条记录';
// }
//修改
$data = ['staff_id'=>51,'name'=>'李大师','age'=>18,'sex'=>1,'position'=>'抓鬼大师','mobile'=>'15626475734','hiredate'=>time()];
$save = Db::table('staff')->save($data);
if ($save > 0) {
echo '成功修改'.$save.'条记录';
}
}
public function h()
{
//添加数据成功返回添加数据的自增主键
$data = ['name'=>'蔡徐坤','age'=>38,'sex'=>1,'position'=>'抓鬼大师','mobile'=>'15626475734','hiredate'=>time()];
$insertGetId = Db::table('staff')->insertGetId($data);
if ($insertGetId > 0) {
echo '成功添加数据，主键：'.$insertGetId;
}
}
public function i()
{
$data = [
['name'=>'蔡徐坤1','age'=>38,'sex'=>1,'position'=>'抓鬼大师1','mobile'=>'15626475731','hiredate'=>time()],
['name'=>'蔡徐坤2','age'=>38,'sex'=>1,'position'=>'抓鬼大师2','mobile'=>'15626475732','hiredate'=>time()],
['name'=>'蔡徐坤3','age'=>38,'sex'=>1,'position'=>'抓鬼大师3','mobile'=>'15626475733','hiredate'=>time()],
['name'=>'蔡徐坤4','age'=>38,'sex'=>1,'position'=>'抓鬼大师4','mobile'=>'15626475734','hiredate'=>time()],
['name'=>'蔡徐坤5','age'=>38,'sex'=>1,'position'=>'抓鬼大师5','mobile'=>'15626475735','hiredate'=>time()],
];
$insertAll = Db::table('staff')->insertAll($data);
if ($insertAll > 0) {
echo '成功添加数据，主键：'.$insertAll;
}
}
public function j()
{
//修改 update 添加或修改 save
$data = ['name'=>'didi','mobile'=>'13049050600'];
$update = Db::table('staff')->where('staff_id',10)->update($data);
if ($update > 0) {
echo '成功修改'.$update.'条记录';
}else
{
echo '数据没有修改';
}
}
public function k()
{
//自增inc 自减dec //第一个值为字段名，第二个值为自增或自减多少值
$inc = Db::table('staff')->where('staff_id',55)->inc('age',10)->update();
print_r($inc);
$dec = Db::table('staff')->where('staff_id',55)->inc('age',10)->update();
}
public function l()
{
//根据条件删除
// $delete = Db::table('staff')->where('staff_id',62)->delete();
//根据主键删除
$delete = Db::table('staff')->delete(61);
//删除整表数据
// $delete = Db::name('staff')->delete(true);
//软删除
// $delete = Db::name('user')->useSoftDelete('status',2)->delete();
}
public function m()
{
//模糊查询 like/whereLike //// not like /whereNotLike
// $like = Db::table('staff')->where('name','like','蔡徐%')->select();
//快捷语法
// $like = Db::table('staff')->wherelike('name','蔡徐%')->select();
$like =Db::table('staff')->whereNotLike('name','蔡徐%')->select();
// print_r($like);
foreach($like as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
public function n()
{
//区间查询 between 区间外 NOTbetween
// $select = Db::table('staff')->where('staff_id','between','10,20')->select();
//快捷语法
$select = Db::table('staff')->whereBetween('staff_id','10,20')->select();
//区间外查询
// $select = Db::table('staff')->where('staff_id','not between','10,20')->select();
//快捷语法
// $select = Db::table('staff')->whereNotBetween('staff_id','10,20')->select();
foreach($select as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
public function o()
{
//IN查询/not in 查询
// $select = Db::table('staff')->where('staff_id','in','10,20,35')->select();
//快捷语法
$select = Db::table('staff')->whereIn('staff_id','10,20,35')->select();
//not in查询
// $select = Db::table('staff')->where('staff_id','not in','10,20,35')->select();
//快捷语法
// $select = Db::table('staff')->whereNotIn('staff_id','10,20,35')->select();
foreach($select as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
public function p()
{
//null查询
// $select = Db::table('staff')->where('hiredate','null')->select();
//快捷语法
// $select = Db::table('staff')->whereNull('hiredate')->select();
// foreach($select as $v)
// {
// echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
// }
// not null查询
// $select = Db::table('staff')->where('hiredate','not null')->select();
//快捷语法
// $select = Db::table('staff')->whereNotNull('hiredate')->select();
foreach($select as $v)
{
echo "<li>{$v['staff_id']}:{$v['name']}---{$v['age']}---{$v['position']}</li>";
}
}
}运行实例 »
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