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1.PHP连接mysql

 

1.使用mysqli_connect()函数连接到MySQL数据库:

mysqli_connect()函数的格式如下:
mysqli_connect('MySQL服务器地址','用户名','用户密码','要连接的数据库名')

 示例:

  <?php
$db=mysqli_connect('rm-bp1mcj07cq777jh904o.mysql.rds.aliyuncs.com','root','Si971666','adatabase'); //连接数据库
?>

 

<?php
$servername = "localhost";
$username = "username";
$password = "password";
 
// 创建连接
$conn = new mysqli($servername, $username, $password);
 
// 检测连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
} 
echo "连接成功";
?>

  

 

 

  <?php
$db=mysqli_connect('rm-bp1mcj07cq178jh904o.mysql.rds.aliyuncs.com','root','Si97166','adatabase')
or die("无法连接到服务器");
print ("成功连接到服务器");
mysqli_close($db);
?>

  

使用mysql_query()函数执行SQL语句:

  <?php
$db=mysqli_connect('rm-bp1mcj07cq777jh904o.mysql.rds.aliyuncs.com','root','Si971077','adatabase')
or die("无法连接到服务器");
print ("成功连接到服务器<br/>");
$sq="insert into users (name,age,gender,info) values('fangfang',18,'femele','She is a 18 years lady')";
$result=mysqli_query($db,$sq);
if($result){echo"插入数据成功!<br/>";}else {echo "插入数据失败!<br/>";}
mysqli_close($db);
?>

  

 

mysqli_fetch_row获取SQL查询结果:
 <?php
$db=mysqli_connect('rm-bp1mcj07cq1777jh904o.mysql.rds.aliyuncs.com','root','Si971777','adatabase')
or die("无法连接到服务器");
print ("成功连接到服务器<br/>");
$sql="select * from adatabase.users";
$result=mysqli_query($db,$sql);
$row = mysqli_fetch_row($result);
echo $row[0];
mysqli_close($db);
?>

  

other....  

posted on 2019-04-21 19:52  流觞区直  阅读(136)  评论(0编辑  收藏  举报