自学站点:http://www.w3school.com.cn/php/index.asp
示范案例
http://www.w3school.com.cn/php/php_mysql_insert.asp
- UI:构图
- 前端:通过表单,文本框,提交按钮,页面布局
- 后端:php连接函数
- 后端:php插入函数
- DBA:实现后台数据库的写入。
- OP:业务上线
准备前台html页面
vim 1.html
<html>
<body>
<img src="logo.jpg" />
<form action="insert.php" method="post">
Firstname: <input type="text" name="firstname" />
Lastname: <input type="text" name="lastname" />
Age: <input type="text" name="age" />
<input type="submit" />
</form>
</body>
</html>
- html 页面的开始
- body页面内容的开始
- form 表单,整理input
- input,文本框
- /form 表单结束
- /body 页面内容结束
- /html 页面结束
准备php中间件
vim insert.php
<?php
$con = mysql_connect("192.168.19.100","root","123456");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
$sql="INSERT INTO Persons (FirstName, LastName, Age)
VALUES
('$_POST[firstname]','$_POST[lastname]','$_POST[age]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con)
?>
- mysql_connect()连接数据库函数
- mysql_select_db()选择数据库函数
- $sql 插入数据变量
- INSERT INTO mysql的插入语言。
准备表和库
create database my_db;
use my_db;
create table Persons (FirstName varchar(50), LastName varchar(50),Age int );
grant all on *.* to root@'%' identified by '123456';
grant all on *.* to root@'192.168.19.100' identified by '123456';
后台数据输出页面
vim /usr/share/nginx/html/select.php
<?php
$con = mysql_connect("localhost","root","123456");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
$result = mysql_query("SELECT * FROM Persons");
echo "<table border='1'>
<tr>
<th>Firstname</th>
<th>Lastname</th>
</tr>";
while($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row['FirstName'] . "</td>";
echo "<td>" . $row['LastName'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysql_close($con);
?>