How to create and import a database on an FTP server using PHP

How to create and import a database on an FTP server using PHP

When developing web applications, the database is an integral component. Sometimes, we may need to import the database from the local development environment to the remote server, or create a new database on the remote server. This article explains how to create and import a database on an FTP server using PHP.

1. Create database

First, we need to create a new database on the FTP server. To achieve this, we need to connect to the server via FTP and use PHP's FTP extension functions for file operations.

<?php
$server = 'ftp.example.com';
$username = 'ftp-username';
$password = 'ftp-password';

$remoteDir = 'public_html';
$dbName = 'new_database';

$connection = ftp_connect($server);
ftp_login($connection, $username, $password);
ftp_chdir($connection, $remoteDir);

// 执行创建数据库的 SQL 语句
$sql = "CREATE DATABASE $dbName";

// 将 SQL 语句保存到一个临时文件
$tmpFile = tempnam(sys_get_temp_dir(), 'sql');
file_put_contents($tmpFile, $sql);

// 将临时文件上传到 FTP 服务器
ftp_put($connection, "$dbName.sql", $tmpFile, FTP_BINARY);

// 删除临时文件
unlink($tmpFile);

// 关闭 FTP 连接
ftp_close($connection);
?>

In the above code example, we first connect to the FTP server, and after logging in successfully, change the current directory to the directory where the database is to be created (usually public_html). Then, we define the name of the database to be created (new_database) and generate a CREATE DATABASE SQL statement. Next, we create a temporary file and write the SQL statement to the file. Finally, use FTP's ftp_put function to upload the temporary file to the FTP server and specify the file name as the database name.

2. Import database

Next, we will introduce how to import the database on the FTP server. Likewise, we need to connect to the server using FTP and execute the SQL statement that imports into the database.

<?php
$server = 'ftp.example.com';
$username = 'ftp-username';
$password = 'ftp-password';

$remoteDir = 'public_html';
$dbName = 'new_database';

$connection = ftp_connect($server);
ftp_login($connection, $username, $password);
ftp_chdir($connection, $remoteDir);

// 执行导入数据库的 SQL 语句
$sql = "SOURCE $dbName.sql";

// 将 SQL 语句保存到一个临时文件
$tmpFile = tempnam(sys_get_temp_dir(), 'sql');
file_put_contents($tmpFile, $sql);

// 将临时文件上传到 FTP 服务器
ftp_put($connection, "import.sql", $tmpFile, FTP_BINARY);

// 执行导入数据库命令
$output = shell_exec("mysql -u database-user -p database-password $dbName < import.sql");

// 删除临时文件
unlink($tmpFile);

// 关闭 FTP 连接
ftp_close($connection);
?>

In the above code example, we first connect to the FTP server, and after logging in successfully, change the current directory to the directory where the database is to be imported (which is also the directory when the database was created in the previous step). We then define the name of the database to import (new_database) and generate a SQL statement to import the database. Next, we create a temporary file and write the SQL statement to the file. Finally, use FTP's ftp_put function to upload the temporary file to the FTP server and specify the file name as import.sql.

After the upload is completed, we use the shell_exec function to execute the import database command. The example here is using MySQL database, you can modify the command according to the actual situation. After successful execution, we can delete the temporary files and close the FTP connection.

Using PHP to create and import the database on the FTP server can help us easily migrate the database of the local development environment to the remote server. Through the above sample code, we can modify and optimize it according to actual needs to meet specific needs. Hope this article can be helpful to you!

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