SQLite3::backup

(PHP 7 >= 7.4.0)

SQLite3::backupBackup one database to another database

说明

public SQLite3::backup ( SQLite3 $destination_db [, string $source_dbname = "main" [, string $destination_dbname = "main" ]] ) : bool

SQLite3::backup() copies the contents of one database into another, overwriting the contents of the destination database. It is useful either for creating backups of databases or for copying in-memory databases to or from persistent files.

参数

destination_db

A database connection opened with SQLite3::open().

source_dbname

The database name is "main" for the main database, "temp" for the temporary database, or the name specified after the AS keyword in an ATTACH statement for an attached database.

destination_dbname

Analogous to source_dbname but for the destination_db.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

范例

Example #1 Backup an existing database

<?php
// $conn is a connection to an already opened sqlite3 database

$backup = new SQLite3('backup.sqlite');
$conn->backup($backup);
?>
add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top