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SQLite3::open

(PHP 5 >= 5.3.0, PHP 7)

SQLite3::openOpens an SQLite database

说明

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.

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.

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.

返回值

没有返回值。

范例

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());
?>

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