Backend DevelopmentPHP TutorialDetailed explanation of the steps to implement database addition, deletion, query and modification in PHPDetailed explanation of the steps to implement database addition, deletion, query and modification in PHP
This time I will bring you a detailed explanation of the steps for adding, deleting, checking and modifying the database in PHP. What are the precautions for adding, deleting, checking and modifying the database in PHP. The following is a practical case, let’s take a look.
TP_3.2.2/Application/Home/Controller/StuController.class.php
<?php
/**
* Created by PhpStorm.
* User: root
* Date: 2018/4/17
* Time: 16:32
*/
namespace Home\Controller;
use Think\Controller;
class StuController extends Controller
{
public function StuShow(){
$this->display("school/stu");
}
public function getdata(){
$Studata = M('stu');
$data['id']='';
$data['name']=I('get.name');
$data['age']=I('get.age');
$data['num']=I('get.num');
$data['address']=I('get.add');
$Studata->add($data);
$this->success("正在。。。",U('Stu/showdata'));
}
public function showdata()
{
$Studata = M('stu');
$data=$Studata->select();
$this->assign('info',$data);
$this->display('school/showdata');
}
public function del(){
$id = I('get.id');
$Studata = M('stu');
$bool = $Studata->where(['id'=>$id])->delete();
if($bool){
echo 1;
}else{
echo 0;
}
}
public function updata()
{
$id = I('get.id');
$Studata = M('stu');
$data = $Studata->where(['id'=>$id])->find();
$this->assign('data',$data);
$this->display("school/upshowdata");
}
public function updatadeal()
{
$Studata = M('stu');
$id = I('get.id');
$data['name']=I('get.name');
$data['age']=I('get.age');
$data['num']=I('get.num');
$data['address']=I('get.add');
$bool = $Studata->where(['id'=>$id])->save($data);
if($bool){
$this->showdata();
}else{
echo 0;
}
}
}
TP_3.2.2/Application/Home/View/school/showdata .html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>数据展示界面</title>
</head>
<body id="content">
<center>
<h2 id="学生信息展示">学生信息展示</h2>
<table border="1">
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
<th>学号</th>
<th>籍贯</th>
<th>操作</th>
<th>操作</th>
<foreach name="info" item="vo" >
<tr>
<td>{$vo['id']}</td>
<td>{$vo['name']}</td>
<td>{$vo['age']}</td>
<td>{$vo['num']}</td>
<td>{$vo['address']}</td>
<td><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="del" where="{$vo['id']}">删除</a></td>
<td><a href="javascript:void(0)" rel="external nofollow" rel="external nofollow" class="up" where="{$vo['id']}">修改</a></td>
</tr>
</foreach>
</table>
</center>
</body>
</html>
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script>
$('.del').click(function () {
var where = $(this).attr('where');
$.ajax({
type: "get",
url: "{:U('Stu/del')}?id="+where,
success: function(msg){
if(msg==1){
alert('删除成功');
location.href('showdata');
}else {
alert('删除失败');
}
}
});
})
$('.up').click(function () {
var where = $(this).attr('where');
location.href('updata?id='+where);
// $.ajax({
// type: "get",
// url: "{:U('Stu/updata')}?id="+where,
// success: function(msg){
// $('#content').html(msg);
// }
// });
})
</script>
TP_3.2.2/Application/Home/View/school/stu.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title> 学号注册查询系统 </title>
</head>
<body>
<form action="{:U('Stu/getdata')}" method="get">
<br>
名字: <input type="text" name="name">
<br>
年龄: <input type="text" name="age">
<br>
学号:<input type="text" name="num">
<br>
籍贯:<input type="text" name="add">
<br>
<input type="submit" value="提交">
<br>
</form>
</body>
</html>
TP_3.2.2/Application/Home /View/school/stu.html
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title> 学号注册查询系统 </title>
</head>
<body>
<form action="{:U('Stu/updatadeal')}" method="get">
<input type="hidden" value="{$data['id']}" name="id">
<br>
名字: <input type="text" name="name" value="{$data['name']}">
<br>
年龄: <input type="text" name="age" value="{$data['age']}">
<br>
学号:<input type="text" name="num" value="{$data['num']}">
<br>
籍贯:<input type="text" name="add" value="{$data['address']}">
<br>
<input type="submit" value="提交">
<br>
</form>
</body>
</html>To execute, enter in the browser: http://127.0.0.1:90/TP_3.2.2/index.php/Home/Stu/stushowClick to delete
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