Home php教程 php手册 php增删改查示例自己写的demo

php增删改查示例自己写的demo

Jun 06, 2016 pm 08:27 PM
php Add, delete, modify and check

增删改查是对数据库最基本的操作,下面详细为大家介绍下如何连接数据库以及增删改查等等相关知识,感兴趣的朋友可以参考下

1.链接数据库通用方法:conn.php

复制代码 代码如下:


//第一步:链接数据库
$conn=@mysql_connect("localhost:3306","root","root")or die ("mysql链接失败");
//第二步: 选择指定的数据库,设置字符集
@mysql_select_db("php_blog",$conn) or die ("db链接失败".mysql_error());
mysql_query('SET NAMES UTF8')or die ("字符集设置错误");
?>


2.增加 add.php

复制代码 代码如下:


include("conn.php");//引入链接数据库
if(!empty($_POST['sub'])){
$title=$_POST['title'];
$con=$_POST['con'];
echo $sql="insert into news(id,title,dates,contents) value (null,'$title',now(),'$con')" ;
mysql_query($sql);
echo"插入成功";
}
?>


标题:

内容:




3.删除del.php

复制代码 代码如下:


include("conn.php");//引入链接数据库

<?php <BR>include("conn.php");//引入链接数据库 <br>if(!empty ($_GET['id'])){ <br>$sql="select * from news whereid']."'"; <br>$query=mysql_query($sql); <br>$rs=mysql_fetch_array($query); <br>} <br>if(!empty($_POST['sub'])){ <br>$title=$_POST['title']; <br>$con=$_POST['con']; <br>$hid=$_POST['hid']; <br>$sql="update news set title='$title',contents='$con' where limit 1 "; <br>mysql_query($sql); <br>echo "<script> alert('更新成功'); location.href='index.php'</script>"; <br>echo"更新成功"; <br>} <br>?> <br>
Copy after login
Copy after login


标题:

内容:




if(!empty($_GET['del'])){ $d=$_GET['del']; $sql="delete from news where id ='$d'"; } $query=mysql_query($sql); echo "删除成功"; ?>


Copy after login



4,改 edit.php页面





<?php <BR>include("conn.php");//引入链接数据库 <br>if(!empty ($_GET['id'])){ <br>$sql="select * from news whereid']."'"; <br>$query=mysql_query($sql); <br>$rs=mysql_fetch_array($query); <br>} <br>if(!empty($_POST['sub'])){ <br>$title=$_POST['title']; <br>$con=$_POST['con']; <br>$hid=$_POST['hid']; <br>$sql="update news set title='$title',contents='$con' where limit 1 "; <br>mysql_query($sql); <br>echo "<script> alert('更新成功'); location.href='index.php'</script>"; <br>echo"更新成功"; <br>} <br>?> <br>
Copy after login
Copy after login


标题:

内容:




5.查,,列表页面
<a href="add.php">添加内容</a> <br><hr> <br><hr> <br>
Copy after login




include("conn.php");//引入链接数据库
if(!empty($_GET['keys'])){
$w=" title like '%".$_GET['keys']."%'";
}else{
$w=1;
}
$sql="select * from news where $w order by id desc";
$query=mysql_query($sql);
while($rs=mysql_fetch_array($query)){
?>

标题: 编辑||删除






  • }
    ?>






    Statement of this Website
    The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

    Hot AI Tools

    Undresser.AI Undress

    Undresser.AI Undress

    AI-powered app for creating realistic nude photos

    AI Clothes Remover

    AI Clothes Remover

    Online AI tool for removing clothes from photos.

    Undress AI Tool

    Undress AI Tool

    Undress images for free

    Clothoff.io

    Clothoff.io

    AI clothes remover

    AI Hentai Generator

    AI Hentai Generator

    Generate AI Hentai for free.

    Hot Article

    R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
    2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
    Repo: How To Revive Teammates
    4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
    Hello Kitty Island Adventure: How To Get Giant Seeds
    4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

    Hot Tools

    Notepad++7.3.1

    Notepad++7.3.1

    Easy-to-use and free code editor

    SublimeText3 Chinese version

    SublimeText3 Chinese version

    Chinese version, very easy to use

    Zend Studio 13.0.1

    Zend Studio 13.0.1

    Powerful PHP integrated development environment

    Dreamweaver CS6

    Dreamweaver CS6

    Visual web development tools

    SublimeText3 Mac version

    SublimeText3 Mac version

    God-level code editing software (SublimeText3)

    CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

    In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

    PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

    PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

    CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

    To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

    CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

    To work on file upload we are going to use the form helper. Here, is an example for file upload.

    CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

    In this chapter, we are going to learn the following topics related to routing ?

    Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

    CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

    How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

    Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

    CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

    Validator can be created by adding the following two lines in the controller.

    See all articles