### Install PHP FinTS/HBCI Library

Source: https://github.com/nemiah/phpfints/blob/master/README.md

Install the library using Composer. Ensure PHP mbstring and unzip/7z are installed beforehand to avoid common errors.

```bash
composer require nemiah/php-fints
```

--------------------------------

### Example FinTS Message Structure

Source: https://github.com/nemiah/phpfints/blob/master/DEVELOPER-GUIDE.md

Illustrates the hierarchical structure of a FinTS message, composed of segments, data elements, and data element groups. Each segment begins with an identifier.

```plaintext
HNHBK:1:3+000000000079+300+dialogID+2'HKEND:2:1+dialogID'HNHBS:3:1+2'
```

--------------------------------

### Logging Requests and Responses

Source: https://github.com/nemiah/phpfints/blob/master/DEVELOPER-GUIDE.md

The `CLILogger` class can record requests and responses during a dialog with the bank. Sensitive values are automatically replaced with placeholders when used with `FinTs::setLogger()`.

```php
$logger = new CLILogger();
$fints = new FinTs($bank, $user, $pin, $tanRequired, $logger);
// ... dialog with bank ...
```

--------------------------------

### ING Diba PSD2 Tan Mode Selection

Source: https://github.com/nemiah/phpfints/blob/master/README.md

For ING Diba, which does not support PSD2, explicitly select the NoPsd2TanMode.

```php
if (trim($blz) == "50010517")
	$fints->selectTanMode(new Fhp\Model\NoPsd2TanMode());
```

--------------------------------

### Prettify FinTS Message

Source: https://github.com/nemiah/phpfints/blob/master/DEVELOPER-GUIDE.md

Use the `prettify_message.php` script to render serialized FinTS messages into a more readable format with inlined field names. This is useful for debugging.

```bash
cat wire_format_message | php prettify_message.php
```

--------------------------------

### Prettify FinTS Segment

Source: https://github.com/nemiah/phpfints/blob/master/DEVELOPER-GUIDE.md

Use the `prettify_segment.php` script to render serialized FinTS segments into a more readable format with inlined field names. This is useful for debugging.

```bash
cat wire_format_segment | php prettify_segment.php
```

--------------------------------

### Hypovereinsbank Special BLZ Handling

Source: https://github.com/nemiah/phpfints/blob/master/README.md

For Hypovereinsbank, use BLZ 70020270 if the URL matches the specific Hypovereinsbank URL to avoid 'Unbekanntes Kreditinstitut' exceptions.

```php
if (trim($url) == 'https://hbci-01.hypovereinsbank.de/bank/hbci')
	$blz = '70020270';
```

--------------------------------

### Fix Coding Style Issues

Source: https://github.com/nemiah/phpfints/blob/master/README.md

Automatically fix coding style issues according to Symfony Coding-Style standards using Composer.

```bash
composer cs-fix
```

--------------------------------

### Update Composer Dependencies

Source: https://github.com/nemiah/phpfints/blob/master/README.md

Update Composer dependencies to ensure all packages are up-to-date.

```bash
composer update
```

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