基于PHP如何实现原生增删改查的示例代码

一、代码 1、sql -- phpMyAdmin SQL Dump -- version 4 5 1 -- http: www phpmyadmin net

一、代码

1、sql

-- phpMyAdmin SQL Dump
-- version 4.5.1
-- http://www.phpmyadmin.net
--
-- Host: 127.0.0.1
-- Generation Time: 2022-03-19 19:16:40
-- 服务器版本：10.1.13-MariaDB
-- PHP Version: 5.6.21

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;

--
-- Database: `a`
--

-- --------------------------------------------------------

--
-- 表的结构 `search`
--

CREATE TABLE `search` (
  `id` int(20) NOT NULL,
  `content` text COLLATE utf8_vietnamese_ci NOT NULL,
  `type` varchar(100) COLLATE utf8_vietnamese_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_vietnamese_ci;

--
-- 转存表中的数据 `search`
--

INSERT INTO `search` (`id`, `content`, `type`) VALUES
(32, 'aaa', '特步'),
(33, '陈业贵喜欢安踏', '安踏');

-- --------------------------------------------------------

--
-- 表的结构 `type`
--

CREATE TABLE `type` (
  `id` int(11) NOT NULL,
  `type` varchar(12) COLLATE utf8_vietnamese_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_vietnamese_ci;

--
-- 转存表中的数据 `type`
--

INSERT INTO `type` (`id`, `type`) VALUES
(1, '安踏'),
(2, '特步');

--
-- Indexes for dumped tables
--

--
-- Indexes for table `search`
--
ALTER TABLE `search`
  ADD PRIMARY KEY (`id`);

--
-- Indexes for table `type`
--
ALTER TABLE `type`
  ADD PRIMARY KEY (`id`);

--
-- 在导出的表使用AUTO_INCREMENT
--

--
-- 使用表AUTO_INCREMENT `search`
--
ALTER TABLE `search`
  MODIFY `id` int(20) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=34;
--
-- 使用表AUTO_INCREMENT `type`
--
ALTER TABLE `type`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=3;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

2、列表页(index.php)

<?php
$link=mysqli_connect('localhost','root','','a');
//然后是指定php链接数据库的字符集
mysqli_set_charset($link,'utf8');
$sql="select * from search";
//模糊查询出像数据库中的title或者content里面的值或者说像数据库中的title或者content里面的某一段值相对应的就行了,就可以输出啦
$result=mysqli_query($link,$sql);//运行sql

?>
<!--显示的效果-->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <table border="1" cellpadding="5">
    <tr>
      <td>id</td>
      <td>种类</td>
      <td>物品</td>
    
    <?php 
      while ($row=mysqli_fetch_array($result)) {//把对象编程数组输出，不然会报错哦
        # code...
    
    ?>
    <tr>
      <td><?=$row['id'];?></td>
      <td><?=$row['content'];?></td>
      <td><?=$row['type'];?></td>
      <td><a href="update.php?id=<?php echo $row['id']; ?>" rel="external nofollow" >更新</a></td>
      <td><a href="delete.php?id=<?php echo $row['id']; ?>" rel="external nofollow" >删除</a></td>
      
    </tr>
    <?php 
    }
    ?>
    </tr>
  </table>
  <a href="create.php" rel="external nofollow" >创建</a>
</body>
</html>

3、delete.php

<?php
$link=mysqli_connect('localhost','root','','a');
//然后是指定php链接数据库的字符集
mysqli_set_charset($link,'utf8');
//$sql = "DELETE FROM `search` WHERE `id` = '$_POST[id]'";

//模糊查询出像数据库中的title或者content里面的值或者说像数据库中的title或者content里面的某一段值相对应的就行了,就可以输出啦
$result=mysqli_query($link,"DELETE FROM search WHERE id ='$_GET[id]'");//运行sql
echo "<script>alert('恭喜你，删除成功了');location.href='index.php';</script>";
?>

4、update.php

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
    <form action="update.php" method="GET">
    <input type="hidden" name="id" value="<?php echo $_GET['id']?>">
    <td>
          <select name='type' width='500' class='selectfont'>
          <option value='-1'>请选择</option>
            <?php
            $link=mysqli_connect('localhost','root','','a');
            //然后是指定php链接数据库的字符集
            mysqli_set_charset($link,'utf8');
            $sql='select * from type';
            
            $re = mysqli_query($link,$sql);
            while($arr = mysqli_fetch_array($re)){
              echo "<option value='".$arr['type']."'>".$arr['type']."</option>";
            }
            ?>
          </select>
    <input type="text" name="content">
    <input type="submit" value="修改">
  </form>
</body>
</html>
<?php
if(!$_GET['content']||$_GET['type']==-1)
{
    
    exit();

}
$link=mysqli_connect('localhost','root','','a');
//然后是指定php链接数据库的字符集
mysqli_set_charset($link,'utf8');
//$sql = "DELETE FROM `search` WHERE `id` = '$_POST[id]'";

//模糊查询出像数据库中的title或者content里面的值或者说像数据库中的title或者content里面的某一段值相对应的就行了,就可以输出啦
$result=mysqli_query($link,"UPDATE search set content='$_GET[content]',type='$_GET[type]' WHERE id ='$_GET[id]'");//运行sql
$sql="select * from search";
//模糊查询出像数据库中的title或者content里面的值或者说像数据库中的title或者content里面的某一段值相对应的就行了,就可以输出啦
$result=mysqli_query($link,$sql);//运行sql
echo "<script>alert('恭喜你，更新成功了');location.href='index.php';</script>";

?>

5、create.php

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <form action="create.php" method="POST">
    <input type="text" name="content">
    <td>
          <select name='type' width='500' class='selectfont'>
          <option value='-1'>请选择</option>
            <?php
            $link=mysqli_connect('localhost','root','','a');
            //然后是指定php链接数据库的字符集
            mysqli_set_charset($link,'utf8');
            $sql='select * from type';
            
            $re = mysqli_query($link,$sql);
            while($arr = mysqli_fetch_array($re)){
              echo "<option value='".$arr['type']."'>".$arr['type']."</option>";
            }
            ?>
          </select>
        </td>
    <input type="submit" value="创建">
  </form>
</body>
</html>
<?php
if(!$_POST['content']||$_POST['type']==-1)
{
    
    exit();

}
$content=$_POST['content'];
$type=$_POST['type'];
$link=mysqli_connect('localhost','root','','a');
//然后是指定php链接数据库的字符集
mysqli_set_charset($link,'utf8');
$sql = "INSERT INTO search(content,type)
VALUES ('{$content}','{$type}')";
 
$result=mysqli_query($link,$sql);
if($result)
{
echo "<script>alert('创建成功');location.href='index.php';</script>";
}
?>