$encryption_key and all encryption features will be enabled only if the SQLite encryption module is installed. It's a proprietary, costly module. So if it's not present, supplying an encryption key will have absolutely no effect.
SQLite3::__construct
(PHP 5 >= 5.3.0, PHP 7)
SQLite3::__construct — Instantiates an SQLite3 object and opens an SQLite 3 database
Opis
public SQLite3::__construct
( string
$filename
[, int $flags = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE
[, string $encryption_key = ""
]] )Instantiates an SQLite3 object and opens a connection to an SQLite 3 database. If the build includes encryption, then it will attempt to use the key.
Parametry
-
filename -
Path to the SQLite database, or :memory: to use in-memory database. If
filenameis an empty string, then a private, temporary on-disk database will be created. This private database will be automatically deleted as soon as the database connection is closed. -
flags -
Optional flags used to determine how to open the SQLite database. By default, open uses SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE.
-
SQLITE3_OPEN_READONLY: Open the database for reading only.
-
SQLITE3_OPEN_READWRITE: Open the database for reading and writing.
-
SQLITE3_OPEN_CREATE: Create the database if it does not exist.
-
-
encryption_key -
An optional encryption key used when encrypting and decrypting an SQLite database. If the SQLite encryption module is not installed, this parameter will have no effect.
Zwracane wartości
Returns an SQLite3 object on success.
Błędy/Wyjątki
Throws an Exception on failure.
Rejestr zmian
| Wersja | Opis |
|---|---|
| 7.0.10 |
The filename can now be empty to use a private,
temporary on-disk database.
|
Przykłady
Przykład #1 SQLite3::__construct() example
<?php
$db = new SQLite3('mysqlitedb.db');
$db->exec('CREATE TABLE foo (bar STRING)');
$db->exec("INSERT INTO foo (bar) VALUES ('This is a test')");
$result = $db->query('SELECT bar FROM foo');
var_dump($result->fetchArray());
?>
add a note
User Contributed Notes 2 notes
bohwaz ¶
12 years ago
jtreurniet at example dot com ¶
6 years ago
Note that the SQLITE3_OPEN_READONLY flag cannot be combined with the SQLITE3_OPEN_CREATE flag. If you combine both of these flags, a rather unhelpful "Unable to open database: out of memory" exception will be thrown.
