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<div class="codetitle"><a style="CURSOR: pointer" data="82744" class="copybut" id="copybut82744" onclick="doCopy('code82744')"> 代码如下:<div class="codebody" id="code82744">
<?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);
?>
（编辑：李大同）
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