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php中mysql连接和基本操作代码

Jun 13, 2016 am 09:37 AM
mysql php code Do Basic operations operate database test of want

 偶尔要用到php做一些mysql数据库的操作测试,自己写起来太麻烦,搜索的结果一般都又包含一大堆没用的代码,这里将php mysql的操作做一下总结,希望以后用到的时候不用再感到麻烦了。

 

代码如下:

$dbhost='localhost';//数据库服务器名称

$dbuser='root';// 连接数据库用户名

$dbpass='123456';// 连接数据库密码

$dbname='products';// 数据库的名字

 

// 连接到数据库

$connect=mysql_connect($dbhost,$dbuser,$dbpass);

if(!$connect) exit('数据库连接失败!');

mysql_select_db($dbname,$connect);

mysql_query('set names utf8');//设置编码

 

//查询操作

$sql="SELECT * FROM `category`";

$result=mysql_query($sql);

while($row=mysql_fetch_array($result)){

 echo $row['id'];

}

//插入操作

$sql="INSERT INTO `category` (`id`,`name`) VALUES (NULL,'".$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();

}

//修改操作

$sql="UPDATE `category` SET `name`='".$name."' WHERE `id`='".$id."'";

$result=mysql_query($sql);

if(mysql_affected_rows()){

 echo '修改成功!';

}

//删除操作

$sql="DELETE FROM `category` WHERE `id`='".$id."'";

$result=mysql_query($sql);

if(mysql_affected_rows()){

 echo '删除成功!';

}

//关闭连接

mysql_close($connect);

?>

 

 

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