# Firebird Functions (PDO_FIREBIRD)

## Introduction

PDO_FIREBIRD is a driver that implements the PHP Data Objects (PDO) interface to enable access from PHP to Firebird database.

## Installation

Use --with-pdo-firebird[=DIR] to install the PDO Firebird extension, where the optional `[=DIR]` is the Firebird base install directory.

    $ ./configure --with-pdo-firebird

## Predefined Constants

The constants below are defined by this driver, and will only be available when the extension has been either compiled into PHP or dynamically loaded at runtime. In addition, these driver-specific constants should only be used if you are using this driver. Using driver-specific attributes with another driver may result in unexpected behaviour. PDO::getAttribute() may be used to obtain the `PDO::ATTR_DRIVER_NAME` attribute to check the driver, if your code can run against multiple drivers.

`PDO::FB_ATTR_DATE_FORMAT` (int)

  Available since PHP 5.3.0.

  Sets the date format.

`PDO::FB_ATTR_TIME_FORMAT` (int)

  Sets the time format.

  Available since PHP 5.3.0.

`PDO::FB_ATTR_TIMESTAMP_FORMAT` (int)

  Sets the timestamp format.

  Available since PHP 5.3.0.

## Table of Contents

- PDO_FIREBIRD DSN — Connecting to Firebird databases