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php连接MYSQL实现增删改查

2015-06-30 16:45 645 查看

1. allusers.php 里面存放所有数据

`<?php
require_once 'functions.php'
?>

<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>

<a href="adduser.html">添加用户</a>
<table>

<tr><th>id</th><th>name</th><th>age</th></tr>
<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2015/6/30
* Time: 12:04
*/
$conn=connectDb();
mysql_select_db('myapp');
$res=mysql_query("SELECT * FROM users");
$datacount=mysql_num_rows($res);

echo $datacount;

for($i=0;$i<$datacount;$i++){

$resarr=mysql_fetch_assoc($res);
//    print_r($resarr);
$id=$resarr['id'];
$name=$resarr['name'];
$age=$resarr['age'];
echo "<tr><td>$id</td><td>$name</td><td>$age</td><td><a href='edituser.php?id=$id'>修改</a></td><td><a href='deletuser.php?id=$id'>删除</a></td></tr>";
}

?>

</table>

</body>
</html>
`

**2. adduser.html

<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<form action="adduser.php" method="get">
姓名：<input type="text" name="name" values="name">
<br><br>
年龄：<input type="text" name="age" values="age">
<input type="submit" values="submit">
</form>
</body>
</html>

adduser.php**

<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2015/6/30
* Time: 13:43
*/
require_once 'config.php';
if(isset($_GET['name'])){
if(isset($_GET['age'])){

$name=$_GET['name'];
if(empty($name)){
die('user name is empty');
}
$age=$_GET['age'];
if(empty($age)){
die('user age is empty');
}
$conn=connectDb();
mysql_select_db('myapp',$conn);
mysql_query("INSERT INTO users(name,age) VALUES ('$name',$age)");

header('location:allusers.php');

}else{

die ('user age not defined');
}

}else {

die('user name not define') ;
}

?>

3. edituser.php

`<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>

<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2015/6/30
* Time: 14:22
*/

require_once 'functions.php';
if(isset($_GET['id'])&&!empty($_GET['id'])) {

$id = $_GET['id'];
connectDb();
mysql_select_db('myapp');
$res = mysql_query("SELECT * FROM users WHERE id=$id");
$resarr = mysql_fetch_assoc($res);
$name = $resarr['name'];
$age = $resarr['age'];
print_r($resarr);
}

?>
<form action="edituser_server.php" method="get"   >
id:
<input type="text" name="id" value="<?php echo $id;  ?>">
姓名：
<input type="text" name="name" value="<?php echo $name;  ?>">
<br><br>
年龄：
<input type="text" name="age" value="<?php echo $age;  ?>">
<input type="submit" values="submit">
</form>
</body>
</html>
`

edituser_server.php

<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2015/6/30
* Time: 15:52
*/

require_once 'functions.php';
if(isset($_GET['name']) && isset($_GET['age']) && isset($_GET['id']) ){

$name=$_GET['name'];
$id=$_GET['id'];
$age=$_GET['age'];

connectDb();
mysql_select_db('myapp');
mysql_query("UPDATE users SET name='$name',age=$age WHERE id=$id");
header('location:allusers.php');

}else
{

die('get wrong');

}

4. deletuser.php

`<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2015/6/30
* Time: 16:30
*/

require_once 'functions.php';
if(isset($_GET['id'])){

$id=$_GET['id'];
connectDb();
mysql_select_db('myapp');
mysql_query("DELETE FROM users WHERE id=$id");
header ('location:allusers.php');

}else {

die ('please choose one id');

}`

在add和edit是会出现网页输入数据，所以用两个php来实现，一个提供form使用户输入值，另一个用get方法接收数据，并对数据库进行操作。

delete不需要用户输入数据，因此不需要穿件输入的input页面，只增添了一个php页面。

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