# sqlite-database-integration/trunk/constants.php

SQLite Database Integration, version trunk. 52 lines.

- Page: https://pluginprobe.com/plugins/sqlite-database-integration/trunk/code/constants.php
- Raw: https://pluginprobe.com/plugins/sqlite-database-integration/trunk/raw/constants.php
- Modified: 2026-08-13T14:24:52+00:00

Line numbers below start at 1. Link to a line or a range by appending a fragment to the
page URL, for example `https://pluginprobe.com/plugins/sqlite-database-integration/trunk/code/constants.php#L10-L20`.

```php
<?php
/**
 * Define constants for the SQLite implementation.
 */

// Temporary - This will be in wp-config.php once SQLite is merged in Core.
if ( ! defined( 'DB_ENGINE' ) ) {
	if ( defined( 'SQLITE_DB_DROPIN_VERSION' ) ) {
		define( 'DB_ENGINE', 'sqlite' );
	} else {
		define( 'DB_ENGINE', 'mysql' );
	}
}

/**
 * Notice:
 * Your scripts have the permission to create directories or files on your server.
 * If you write in your wp-config.php like below, we take these definitions.
 * define('DB_DIR', '/full_path_to_the_database_directory/');
 * define('DB_FILE', 'database_file_name');
 */

/**
 * FQDBDIR is a directory where the sqlite database file is placed.
 * If DB_DIR is defined, it is used as FQDBDIR.
 *
 * @deprecated 3.0.0 Define DB_DIR instead of overriding FQDBDIR.
 */
if ( ! defined( 'FQDBDIR' ) ) {
	if ( defined( 'DB_DIR' ) ) {
		define( 'FQDBDIR', trailingslashit( DB_DIR ) );
	} elseif ( defined( 'WP_CONTENT_DIR' ) ) {
		define( 'FQDBDIR', WP_CONTENT_DIR . '/database/' );
	} else {
		define( 'FQDBDIR', ABSPATH . 'wp-content/database/' );
	}
}

/**
 * FQDB is a database file name. If DB_FILE is defined, it is used
 * as FQDB.
 *
 * @deprecated 3.0.0 Define DB_DIR and DB_FILE instead of overriding FQDB.
 */
if ( ! defined( 'FQDB' ) ) {
	if ( defined( 'DB_FILE' ) ) {
		define( 'FQDB', FQDBDIR . DB_FILE );
	} else {
		define( 'FQDB', FQDBDIR . '.ht.sqlite' );
	}
}

```