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    SQLite Functions (PDO_SQLITE)

    Introduction

    PDO_SQLITE is a driver that implements the PHP Data Objects (PDO) interface to enable access to SQLite 3 databases.

    Note:

    PDO_SQLITE allows using strings apart from streams together with PDO::PARAM_LOB.

    Installation

    The PDO_SQLITE PDO driver is enabled by default. To disable, --without-pdo-sqlite[=DIR] may be used, where the optional [=DIR] is the sqlite base install directory. As of PHP 7.4.0 » libsqlite ≥ 3.5.0 is required. Formerly, the bundled libsqlite could have been used instead, and was the default, if [=DIR] has been omitted.

    Note: Additional setup on Windows as of PHP 7.4.0

    In order for this extension to work, there are DLL files that must be available to the Windows system PATH. For information on how to do this, see the FAQ entitled "How do I add my PHP directory to the PATH on Windows". Although copying DLL files from the PHP folder into the Windows system directory also works (because the system directory is by default in the system's PATH), this is not recommended. This extension requires the following files to be in the PATH: libsqlite3.dll.

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    User Contributed Notes 4 notes

    up
    6
    ohcc at 163 dot com
    4 years ago
    With PDO SQLite driver, calculation within an SQL with multiple ? may not get results as you expect.

    <?php
    // ....
    $stmt = $PDO->prepare('SELECT * FROM `X` WHERE `TimeUpdated`+?>?');
    $stmt->execute([3600, time()]);
    $data = $stmt->fetchAll();
    print_r($data);
    ?>

    To get the right results, you have more than 3 solutions.

    1. Change 'SELECT * FROM `X` WHERE `TimeUpdated`+?>?' to 'SELECT * FROM `X` WHERE `TimeUpdated`>?' and do the math using Php (ie: $stmt->execute([time()-3600]); ).

    2. Use PdoStatement::bindParam or PdoStatement::bindValue, and set the parameter type to PDO::PARAM_INT.

    3. Change 'SELECT * FROM `X` WHERE `TimeUpdated`+?>?' to 'SELECT * FROM `X` WHERE `TimeUpdated`+?>?+0', here '?+0' may be replaced by another math function or another calculation, such as 'abs(?)', you can even wrap both ? with a math calculation.
    up
    7
    aidan at php dot net
    19 years ago
    If you receive an error while trying to write to a sqlite database (update, delete, drop):

    Warning: PDO::query() [function.query]: SQLSTATE[HY000]: General error: 1 unable to open database

    The folder that houses the database file must be writeable.
    up
    6
    nospam8715 at dririan dot com
    12 years ago
    Instead of compiling an old version of SQLite to create a database using an older database format that the version of SQLite bundled with PDO can handle, you can (much more easily) just run the query "PRAGMA legacy_file_format = TRUE;" BEFORE creating the database (if you have an existing database, run ".dump" from the sqlite shell on your database, run the sqlite shell on a new database, run the PRAGMA, then paste the contents of the .dump). That will ensure SQLite creates a database readable by SQLite 3.0 and later.
    up
    0
    Duffalo
    18 years ago
    Note that as of the date of this post, PDO_SQLITE will not interact with database files created with the current version of the SQLite console application, sqlite-3.3.6.

    It is currently necessary to obtain version 3.2.8, available from http://www.sqlite.org/ but only by entering the URI manually, as there is no link. Go to http://www.sqlite.org/download.html and find the URI of the version you're looking for, then make the appropriate version number substitution.
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