MySqli:是否可以创建数据库? [英] MySqli: is it possible to create a database?

问题描述

我一直在筛选MySQLi文档，据我所知，我无法使用PHP和MySQLi创建数据库.这是正确的吗?

I've been sifting through the MySQLi docs, and as far as I can tell, I there's no way to create a database using PHP and MySQLi. Is this correct?

推荐答案

CREATE DATABASE语句用于在MySQL中创建数据库.

The CREATE DATABASE statement is used to create a database in MySQL.

• 语法:

• Syntax:

CREATE DATABASE database_name 

要使PHP执行SQL指令，首先必须使用以下命令创建一个mysqli对象: 连接到服务器，然后使用MySQLi类的query()方法.

To get PHP to execute the SQL instructions, first you must create a mysqli object with the connection to the server, then use the query() method of the MySQLi class.

• 语法:

• Syntax:

mysqliObj->query($sql_query)

• mysqliObj-是使用新的mysqli()创建的mysqli对象
• $ sql_query-是带有SQL指令的字符串.此方法将查询或命令发送到MySQL连接，将返回结果对象，如果成功，则返回TRUE.失败则为假.

• mysqliObj - is the mysqli object created with new mysqli()
• $sql_query - is a string with SQL instructions. This method sends a query or command to a MySQL connection, will return a result object, or TRUE on success. FALSE on failure.

下面的示例创建一个名为"tests"的数据库:

The following example creates a database called "tests":

<?php
// connect to the MySQL server
$conn = new mysqli('localhost', 'root', 'pass');

// check connection
if (mysqli_connect_errno()) {
  exit('Connect failed: '. mysqli_connect_error());
}

// sql query with CREATE DATABASE
$sql = "CREATE DATABASE `tests` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci";

// Performs the $sql query on the server to create the database
if ($conn->query($sql) === TRUE) {
  echo 'Database "tests" successfully created';
}
else {
 echo 'Error: '. $conn->error;
}

$conn->close();
?>

检查此链接 http://coursesweb.net/php-mysql/php -mysql-using-mysqli

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