复制代码 代码如下:

<?php
$dbhost=\'localhost\';
$dbuser=\'root\';
$dbpass=\'123456\';
$dbname=\'products\';
$connect=mysql_connect($dbhost,$dbuser,$dbpass);
if(!$connect) exit(\'数据库连接失败！\');
mysql_select_db($dbname,$connect);
mysql_query(\'set names utf8\');
//查询
$sql=\"SELECT * FROM `category`\";
$result=mysql_query($sql);
while($row=mysql_fetch_array($result)){
 echo $row[\'id\'];
}
//插入
$sql=\"INSERT INTO `category` (`id`,`name`) VALUES (NULL,\'\".$name.\"\')\";
$result=mysql_query($sql);
if(mysql_affected_rows()){
 echo \'插入成功，插入ID为：\',mysql_insert_id();
}else{
 echo \'插入失败：\',mysql_error();
}
//修改
$sql=\"UPDATE `category` SET `name`=\'\".$name.\"\' WHERE `id`=\'\".$id.\"\'\";
$result=mysql_query($sql);
if(mysql_affected_rows()){
 echo \'修改成功！\';
}
//删除
$sql=\"DELETE FROM `category` WHERE `id`=\'\".$id.\"\'\";
$result=mysql_query($sql);
if(mysql_affected_rows()){
 echo \'删除成功！\';
}
//关闭连接
mysql_close($connect);
?>