How to manage PHP category tables
This article mainly introduces the management method of PHP category table. Interested friends can refer to it. I hope it will be helpful to everyone.
Create a database:
CREATE TABLE IF NOT EXISTS `class_add` ( `ID` int(4) NOT NULL AUTO_INCREMENT, `class_name` varchar(100) NOT NULL, PRIMARY KEY (`ID`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=12 ;
The code is as follows:
index.html
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>添加分类</title>
</head>
<body>
<form action="add.php" method="post">
类别:<input type="text" name="class_name"/><br><br>
<input type= "submit" value="添加"/>
</form>
</body>
</html>add.php
<?php
$class_name = $_POST['class_name']; //获取表单提交数据
$conn = mysql_connect("localhost","root","111111"); //链接数据库
if(!$conn) //链接数据库判断
{
die("连接数据库失败".mysql_error());
}
//选择数据库
mysql_select_db("class_add") or die("数据库选择失败".mysql_error());
mysql_query("set names 'uft8'");
//需要使用的SQL语句
$sql = "insert into class_add(class_name) values ('$class_name')";
//执行SQL语句
$result = mysql_query($sql,$conn);
//判断SQL语句是否执行成功
if(!$result)
{
echo '数据插入失败！'.mysql_error();
exit;
}
mysql_close($conn);//断开与数据库的链接
include("index.html");//返回类别添加页面
?>select.php
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>调用分类</title>
</head>
<body>
<?php
$conn = mysql_connect("localhost","root","111111");
if(!$conn)
{
die("连接数据库失败".mysql_error());
}
mysql_select_db("class_add") or die("数据库选择失败".mysql_error());
mysql_query("set names 'uft8'");
$sql = "select class_name from class_add";
$result = mysql_query($sql,$conn);
?>
<form action="test.php" method="post">
<select name="class_name" size="1">
<?php
//数据库获取的数据是以数组形式表示的
while($row = mysql_fetch_row($result))
{
foreach($row as $key=>$key_val)
{
echo "<option value=".$key_val.">".$key_val."</option>";
}
echo "<br/>";
}
?>
</select>
<input type= "submit" value="确定"/>
</form>
</body>
</html>test.php
<?php $class_name = $_POST['class_name']; echo $class_name; ?>
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