License and authors
-------------------

    This project is free and under GPL (see gpl.txt). So do what ever you want.
    But it would be nice to leave a note about the authors.

    The author of the original project which gave the idea to this project is
    Björn Wilmsmann. Responsable for this project is
    Markus Malkusch <[email protected]>.


Requirements
------------

    You may have:

    * CURL
        BAV_DataBackend_File->update() makes usage of the curl_* methods.
        BAV_DataBackend_File->update() is called to download the bank data from
        the Bundesbank. This is also needed by BAV_DataBackend_PDO->update(). If
        you provide data/banklist.txt without using
        BAV_DataBackend_File->update() you don't need CURL.

    * mbstring or iconv
        BAV works with unicode encoding. Your PHP must have support compiled
        in to either the mb_* or the iconv_* functions. If these functions are
        missing BAV works only with the ISO-8859-15 encoding.

    * PDO
        If you intend to use a DBS you need to use BAV_DataBackend_PDO. 
        BAV_DataBackend_PDO needs a PDO support compiled in PHP.


Configuration
-------------

    There is nothing to configure at all. The configuration is done implicitly
    by the parameters you use to create a BAV_DataBackend object. You may
    specify another encoding than UTF-8 with BAV::setEncoding().

    But before you can use any class of BAV you have to include 
    autoloader/autoloader.php. BAV uses the autoloader generated by
    <http://php-autoloader.malkusch.de/en/>.


Installation and Update
-----------------------

    Visit <http://bav.malkusch.de/> and download the latest version.

    You have to decide which datastructure you'll use. BAV comes with two
    structures:
    BAV_DataBackend_File and BAV_DataBackend_PDO. BAV_DataBackend_File uses the
    text file which is provided by the Bundesbank. BAV_DataBackend_PDO uses 
    PHP's PDO-mechanism to connect with a DBS.

    If you use BAV the first time you have to create a BAV_DataBackend object
    (PDO or File) and call the method install(). In case of PDO it will create
    the tables. install() does also call update() to snychronize the first time
    with the Bundesbank.

    To keep your database synchronized you have to call update(). It will
    download the file from the Bundesbank and update your datastructure. The
    Bundesbank releases 4 times a year a new file: March, June, September,
    December.


Usage
-----

    Define one BAV_DataBackend object (which has an installed data structure).
    Use the BAV_DataBackend->getBank($bankID) to get a BAV_Bank object. This
    might raise a BAV_DataBackendException_BankNotFound if the bank was not
    found. If you only want to check if a bank exists you may use
    BAV_DataBackend->bankExists($bankID).

    You can use the BAV_Bank object to get information about the bank. Every
    bank has a main agency. You get this BAV_Agency object with
    BAV_Bank->getMainAgency(). A bank might also have some more agencies. These
    optional agencies can be fetched with BAV_Bank->getAgencies(). Note that the
    main agency is not included in this array. So the array
    BAV_Bank->getAgencies() might even be empty.

    A BAV_Agency object provides these informations:

        BAV_Agency->getPostcode()
        BAV_Agency->getCity()
        BAV_Agency->getName()
        BAV_Agency->getShortTerm()
        BAV_Agency->hasPAN()
        BAV_Agency->getPAN()
        BAV_Agency->hasBIC()
        BAV_Agency->getBIC()

    The boolean method BAV_Bank->isValid($accountID) will tell you if the
    account is valid (TRUE) or invalid (FALSE).

    If you use BAV_DataBackend_PDO you may use
    BAV_DataBackend_PDO->getAgencies($sql) to search for BAV_Agency objects with
    an arbitrary SQL statement. Your statement should at least return the id of
    the agencies. You perform better if your statement returns all attributes of
    the agency table.

    BAV uses UTF-8 as default enconding. So every string
    (especialy BAV_Agency->get*()) in BAV is UTF-8 encoded. If you intend to
    work with those strings you should use PHP's mb_* oder iconv_* methods.


Example
-------

    You find it in scripts/example.php


Helping BAV
-----------

    test/checkValidators.php can find broken classes. This is only usefull for
    debugging purposes if you implement new validators or data backends. There
    exists a file with account ids for testing the validators. It's located at
    data/verify.ini. You may add some account ids, if you want them to be
    checked by checkValidators.php. If you then find some validators which are
    implemented incorrectly, you should send a bug report. Don't forget to
    mention the validation alogrithm (BAV_Bank->getValidationType()), the
    account id and the expected result.

    There exists also the script scripts/verifyImport.php. You can use this to
    import your bank accounts to a data/verify.ini and check them with
    test/checkValidators.php. See the comments in verifyImport.php for more
    details on usage. If there are errors you can send your verify.ini to
    <[email protected]>. Even if there aren't errors you can send this file, so
    we have a larger database of testing accounts for future implementations.
    The verify.ini contains only bank accounts with the validation type. There
    is no information about the bank id, so the verify.ini can't be abused.