PHP develops simple voting system to create database and table

First create a database "test" in mysql

<?php
// 创建连接
$conn = new mysqli("localhost", "uesename", "password");
// 检测连接
if ($conn->connect_error) 
{    
    die("连接失败: " . $conn->connect_error);} 
    // 创建数据库
    $sql = "CREATE DATABASE test";
        if ($conn->query($sql) === TRUE) 
        {    
        echo "数据库创建成功";
        } else {    
        echo "Error creating database: " . $conn->error;
        }
    $conn->close();
?>

Then we need to create a voto table to add voting items

Settings The following fields:

#id: It is unique, type is int, and the primary key is selected.

titleid: fixed, type is int

item: voting item, type is varchar, length is 50.

count: Number of votes, type is int.

<?php
$SQL = " CREATE TABLE IF NOT EXISTS `voto` (
  `id` int(10) NOT NULL auto_increment,
  `titleid` int(10) default NULL,
  `item` varchar(50) default NULL,
  `count` int(10) default NULL,
  PRIMARY KEY  (`id`)
)ENGINE=InnoDB AUTO_INCREMENT=28 DEFAULT CHARSET=utf8;"
?>

Add some test content, such as

<?php
$SQL = "INSERT INTO vote VALUES ('24', '1', '张学友', '8');"
$SQL = "INSERT INTO vote VALUES ('25', '1', '陈奕迅', '12');"
$SQL = "INSERT INTO vote VALUES ('26', '1', '林俊杰', '12');"
$SQL = "INSERT INTO vote VALUES ('27', '1', '萧敬腾', '23');"
?>

and then create another table votetitle to store the title.

Set the following fields:

titleid: type is int

votetitle: title, type is varchar, length is 50.

<?php
$SQL = " CREATE TABLE IF NOT EXISTS `votetitle` (
  `titleid` int(10) NOT NULL,
  `votetitle` varchar(50) default NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
?>

Add a title statement:

<?php
$SQL = "INSERT INTO votetitle VALUES ('1', '您认为本网站还有那些要做调整？');"
?>

In this way, we have created the database and tables, and added some test data.