# SQLite3::open

(PHP 5 >= 5.3.0, PHP 7)

SQLite3::open — Opens an SQLite database

### Description

public SQLite3::open ( string `$filename` [, int `$flags` = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE [, string `$encryption_key` = "" ]] ) : void

Opens an SQLite 3 Database. If the build includes encryption, then it will attempt to use the key.

### Parameters

`filename`

  Path to the SQLite database, or `:memory:` to use in-memory database.

`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.

### Return Values

No value is returned.

### Examples

Example #1 SQLite3::open() example

`<?php
/**
* Simple example of extending the SQLite3 class and changing the __construct
* parameters, then using the open method to initialize the DB.
*/
class MyDB extends SQLite3
{
function __construct()
{
$this->open('mysqlitedb.db');
}
}
$db = new MyDB();
$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());
?>`