php增删改查示例自己写的demo_PHP教程-PHP-Tutorial-php.cn

php增删改查示例自己写的demo_PHP教程

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Freigeben： 2016-07-21 16:12:26

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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";
}
?>

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 where id='".$_GET['id']."'"; <br>$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='$con' where id='$hid' 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>

Nach dem Login kopieren

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

Nach dem Login kopieren

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 where id='".$_GET['id']."'"; <br>$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='$con' where id='$hid' 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>

Nach dem Login kopieren

5.查，列表页面

<a href="add.php">添加内容</a> <br><hr> <br><hr> <br>

Nach dem Login kopieren

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

}
?>