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    SQLite3::backup

    (PHP 7 >= 7.4.0, PHP 8)

    SQLite3::backup — Backup one database to another database

    Beschreibung

    public SQLite3::backup(SQLite3 $destination, string $sourceDatabase = "main", string $destinationDatabase = "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.

    Tipp

    As of SQLite 3.27.0 (2019-02-07), it is also possible to use the statement VACUUM INTO 'file.db'; to backup the database to a new file.

    Parameter-Liste

    destination

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

    sourceDatabase

    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.

    destinationDatabase

    Analogous to sourceDatabase but for the destination.

    Rückgabewerte

    Gibt bei Erfolg true zurück. Bei einem Fehler wird false zurückgegeben.

    Beispiele

    Beispiel #1 Backup an existing database

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

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