*链接数据库
$db_host = 'localhost';
$db_user = 'root';
$db_pass = '';
$db_name = 'xxx';
$myconn=mysql_connect("$db_host","$db_user","$db_pass"); //连接服务器
mysql_select_db("$db_name",$myconn); //选择操作库
* 插入
$sql="INSERT INTO `score` (
`id` ,
`phone` ,
`score`
)
VALUES (
NULL, '".$phone."', '".$score."'
);";
mysql_query($sql);
* 查询
$sql="SELECT * FROM `score` ORDER BY `score` DESC LIMIT 0 , 30"; //先执行SQL语句显示所有记录
$result=mysql_query($sql); //使用mysql_query()发送SQL请求
while($row=mysql_fetch_array($result)) //遍历SQL语句执行结果把值赋给数组
{
echo $row['score'];
}
// 如果只查一条数据建议使用mysql_fetch_row
$sql="SELECT `score` FROM `list` LIMIT 0 , 1";
$result=mysql_query($sql);
$row=mysql_fetch_row($result);
echo $row[0];
* 删除
DELETE FROM `vpn_account` WHERE `user` = 'abc' AND `pwd` = 'aaa' LIMIT 1;
** 获取查询结果条目
1,
$sql = "SELECT `id` FROM `list` WHERE `phone` = '".$phone."';";
$query = mysql_query($sql);
$num=mysql_num_rows($query);
2,
$sql = "SELECT COUNT(id) FROM `list` WHERE `phone` = '".$phone."';";
$query = mysql_query($sql);
$num=mysql_fetch_row($query);
echo $num[0];
* 更新数据库
$sql = "UPDATE `list` SET
`score` = '101',
`date` = '2014-09-17'
WHERE `id` =60 LIMIT 1 ;";
$query = mysql_query($sql);