SQLite3::open
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SQLite3::open — Opens an SQLite database
说明
$filename
, int $flags
= SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE
, string $encryptionKey
= ""
) : voidOpens an SQLite 3 Database. If the build includes encryption, then it will attempt to use the key.
参数
-
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.
-
-
encryptionKey
-
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.
返回值
没有返回值。
范例
示例 #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());
?>