Mysqli 简明教程
MySQLi - Create Database
Create Database Using mysqladmin
您需要拥有特殊权限才能创建或删除 MySQL 数据库。因此,假设您有权访问 root 用户,则可以使用 mysql mysqladmin 二进制文件创建任何数据库。
You would need special privileges to create or to delete a MySQL database. So assuming you have access to the root user, you can create any database using the mysql mysqladmin binary.
Create a Database using PHP Script
PHP 使用 mysqli query() 或 mysql_query() 函数来创建或删除 MySQL 数据库。这个函数接收两个参数,并在成功时返回 TRUE,并在失败时返回 FALSE。
PHP uses mysqli query() or mysql_query() function to create or delete a MySQL database. This function takes two parameters and returns TRUE on success or FALSE on failure.
Syntax
$mysqli→query($sql,$resultmode)
Sr.No. |
Parameter & Description |
1 |
$sql Required - SQL query to create a MySQL database. |
2 |
$resultmode Optional - Either the constant MYSQLI_USE_RESULT or MYSQLI_STORE_RESULT depending on the desired behavior. By default, MYSQLI_STORE_RESULT is used. |
Example
尝试以下示例来创建数据库 −
Try the following example to create a database −
将以下示例复制粘贴为 mysql_example.php:
Copy and paste the following example as mysql_example.php −
<html>
<head><title>Creating MySQL Database</title></head>
<body>
<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = 'root@123';
$mysqli = new mysqli($dbhost, $dbuser, $dbpass);
if($mysqli→connect_errno ) {
printf("Connect failed: %s<br />", $mysqli→connect_error);
exit();
}
printf('Connected successfully.<br />');
if ($mysqli→query("CREATE DATABASE TUTORIALS")) {
printf("Database TUTORIALS created successfully.<br />");
}
if ($mysqli→errno) {
printf("Could not create database: %s<br />", $mysqli→error);
}
$mysqli→close();
?>
</body>
</html>