php数据访问之增删改查操作，php数据访问增删_PHP教程

php数据访问之增删改查操作，php数据访问增删

增删改查操作小练习，大家练练手吧

一、查看新闻页面-----主页面

 

查看新闻

<?php
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("连接失败！");
$sql="select * from news";
$result=$db->query($sql);
$arr=$result->fetch_all();
foreach ($arr as $v)
{
  echo "";
  }
 
?>


  
id
  
title
  
author
  
source
   
content
  
date
  
update
  
delete

  
{$v[0]}
  
{$v[1]}
  
{$v[2]}
  
{$v[3]}
  
{$v[4]}
  
{$v[5]}
  
update
  
delete
   
  




发布新闻
 

二、发布新闻页面-----添加内容

 

 

发布新闻
 

 
 

提交内容后的处理：

<?php
$newsid=$_POST["newsid"];
$title=$_POST["title"];
$author=$_POST["author"];
$source=$_POST["source"];
$content=$_POST["content"];
$time=date("Y-m-d",time());
 
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("联系失败!");
$sql="insert into news values('{$newsid}','{$title}','{$author}','{$source}','{$content}','{$time}')";
$result=$db->query($sql);
if($result)
{
  header ("location:xinwen.php");
  }
else
{
  echo "添加新闻失败！";
  }

三、删除内容处理

<?php
$newsid=$_GET["newsid"];
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("连接失败!");
$sql="delete from news where newsid='{$newsid}'";
$result=$db->query($sql);
if($result)
{
  header ("location:ChaKan.php");
  }
else
{
  echo "删除数据失败";
  }
?>

四、修改新闻页面----修改新闻内容后提交查看

 

修改新闻
<?php
$newsid = $_GET["newsid"];
$db = new MySQLi("localhost","root","","mydb");
$sinfo = "select * from news where newsid='{$newsid}'";
$r = $db->query($sinfo);
$arr = $r->fetch_row(); //这个人的所有信息
?>
 

 

　　

提交修改内容后进行处理：

<?php
$newsid=$_POST["newsid"];
$title=$_POST["title"];
$author=$_POST["author"];
$source=$_POST["source"];
$content=$_POST["content"];
$time=date("Y-m-d",time());

$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("联系失败!");
$sql="update news set title='{$title}',author='{$author}',source='{$source}',content='{$content}',time='{$time}' where newsid='{$newsid}'";
$result=$db->query($sql);
if($result)
{
  header ("location:Update.php");
  }
else
{
  echo "修改数据失败!";
  }

以上就是本文的全部内容，希望对大家学习php程序设计有所帮助。

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