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PHP save data to Mysql database code example_PHP tutorial

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Jul 13, 2016 am 10:46 AM

mysql php code keep exist data database method use Example

The two most commonly used methods of saving data to the mysql database in php are the insert and update methods. Let me introduce the mysql data saving method to beginners.

There are three steps for PHP to write data to the MySQL database:

1. Establish a connection between PHP and MySQL
2. Open the MySQL database
3. Accept the page data and enter it into the specified table with PHP
You can directly use a database link file in steps 1 and 2: conn.php

The code is as follows

代码如下	复制代码
mysql_connect("localhost","root","");//连接MySQL mysql_select_db("mythroad");//选择数据库 ?>

Copy code

mysql_connect("localhost","root","");//Connect MySQL

mysql_select_db("mythroad");//Select database

代码如下	复制代码
require_once("conn.php");//引用数据库链接文件 $uname = $_GET['n'];//GET方法为URL参数传递 $pwd = $_GET['p']; $pwd =md5($pwd );//直接使用MD5加密 $sql = "insert into mythroad(username,password) values ('$uname','$pwd')"; mysql_query($sql);//借SQL语句插入数据 mysql_close();//关闭MySQL连接 echo "成功录入数据"; ?>

Of course, the premise is that the WEB server, PHP and MySQL have been installed, and the MySQL table "mythroad" has been created The three parameters in mysql_connect() are MySQL address, MySQL username and MySQL password

Then the data is passed through the WEB page, and PHP writes the data into the table specified in the MySQL database through SQL statements, such as creating a new file

post.php

The code is as follows

代码如下

复制代码

$conn = @mysql_connect("localhost","root","root123");
if (!$conn){
die("连接数据库失败：" . mysql_error());
}

mysql_select_db("test", $conn);
mysql_query("set names 'gbk'");

$sql = "UPDATE user SET email = 'xiaoming@163.com' WHERE username = '小明'";
if(mysql_query($sql,$conn)){
echo "更新数据成功！";
} else {
echo "更新数据失败：".mysql_error();
}
?>

Copy code

require_once("conn.php");//Reference database link file

$uname = $_GET['n'];//GET method passes URL parameters

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