PDO_SQLITE is a driver that implements the PHP Data Objects (PDO) interface to enable access to SQLite 3 databases.
In PHP 5.1, the SQLite extension also provides a driver for SQLite 2 databases; while it is not technically a part of the PDO_SQLITE driver, it behaves similarly, so it is documented alongside it. The SQLite 2 driver for PDO is provided primarily to make it easier to import legacy SQLite 2 database files into an application that uses the faster, more efficient SQLite 3 driver. As a result, the SQLite 2 driver is not as feature-rich as the SQLite 3 driver.
Note:
PDO_SQLITE allows using strings apart from streams together with
PDO::PARAM_LOB.
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
为了使此扩展生效， DLL 文件必须能在 Windows 系统的 PATH 指示的路径下找到。如何操作的信息，请参见题为“如何在 Windows 中将 PHP 目录加到 PATH 中”的FAQ。虽然将 DLL 文件从 PHP 文件夹复制到 Windows 系统目录也行，但不建议这样做。 此扩展需要下列文件在 PATH 路径中： libsqlite3.dll.