Simple file upload to MySql database developed in PHP (1)

The previous section explained how to save files to a local directory through PHP code

In this section we explain how to upload files to the database.

First we need to create a test database:

<?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 database img table, containing three content ids, title titles, and pic image addresses.

Set the following fields:

id: It is unique, of type int, and select the primary key.

title: Title, type is varchar, length is 100.

pic: Picture storage address, type is varchar, length is 100.

<?php
// 创建连接
$conn = new mysqli("localhost", "uesename", "password","test");
// 检测连接
if ($conn->connect_error) 
{    
die("连接失败: " . $conn->connect_error);
} 
// 使用 sql 创建数据表
$sql = "CREATE TABLE img (
id INT(10) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
title VARCHAR(100) NOT NULL,
pic VARCHAR(200) NOT NULL,)ENGINE=InnoDB DEFAULT CHARSET=utf8 ";
if ($conn->query($sql) === TRUE) 
{    
echo "Table MyGuests created successfully";
} else {    
echo "创建数据表错误: " . $conn->error;
}
$conn->close(); 
?>

Of course, you can also directly create databases and tables through phpMyAdmin.

For details, please refer to our PHP development user login module tutorial on creating databases and tables.