php数据访问之增删改查操作
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【下载文档: php数据访问之增删改查操作.txt 】
php数据访问之增删改查操作
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
查看新闻查看新闻
id |
title |
author |
source |
content |
date |
update |
delete |
$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 $v)
{
echo "
{$v[0]} |
{$v[1]} |
{$v[2]} |
{$v[3]} |
{$v[4]} |
{$v[5]} |
update |
delete |
";
}
?>
二、发布新闻页面-----添加内容
发布新闻发布新闻
提交内容后的处理:
$newsid=$_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
$newsid=$_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
修改新闻修改新闻
$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:
$newsid=$_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。