### Installing php-pcbis via Composer

Source: https://github.com/fundevogel/php-pcbis/blob/main/README.md

Command to install the php-pcbis library using Composer package manager.

```text
composer require fundevogel/php-pcbis
```

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

### Configuring API Testing Endpoint in PHP

Source: https://github.com/fundevogel/php-pcbis/blob/main/README.md

Shows how to initialize the API wrapper and set the testing URL for development purposes.

```php
# Initialize API wrapper
$api = new Webservice($credentials);

# Use 'testing' URL 
$api->url = 'https://wstest.pcbis.de/ws30';
```

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

### Basic Usage of php-pcbis Library in PHP

Source: https://github.com/fundevogel/php-pcbis/blob/main/README.md

Demonstrates how to initialize the Pcbis object, load a book by ISBN, export data, access specific information, download cover, and check availability. Includes error handling.

```php
<?php

require_once('vendor/autoload.php');

use Fundevogel\Pcbis\Pcbis;

# Create object, passing credentials as first parameter (for caching, see below)
$object = new Pcbis([/* ... */]);

try {
    # After loading a book, you might want to ..
    $book = $object->load('978-3-522-20255-8');

    # (1) .. export its bibliographic data
    $data = $book->export();

    # (2) .. access specific information
    echo $book->title();

    # (3) .. download its cover
    if ($book->downloadCover()) {
        echo 'Cover downloaded!';
    }

    # (4) .. query its OLA status
    if ($book->isAvailable()) {
        # ...
    }

} catch (Exception $e) {
    echo 'Error: ' . $e->getMessage(), "\n";
}
```

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

### Implementing Caching with php-pcbis in PHP

Source: https://github.com/fundevogel/php-pcbis/blob/main/README.md

Demonstrates how to implement a caching mechanism when using the php-pcbis library to store and retrieve book data.

```php
require_once('vendor/autoload.php');

use Fundevogel\Pcbis\Pcbis;

$obj = new Pcbis([/* ... */]);
$ean = 'identifier';

if ($myCache->has($ean)) {
    $data = $myCache->get($ean);
    $product = $obj->load($data);
}

else {
    $product = $obj->load($ean);
    $myCache->set($ean, $product->data);
}
```

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

### Kirby CMS Package License Declaration in YML

Source: https://github.com/fundevogel/php-pcbis/blob/main/src/Helpers/README.md

YAML license declaration for KirbyCMS classes in the src/Helpers directory, indicating MIT licensing and attribution to Bastian Allgeier.

```yml
package:   KirbyCMS
author:    Bastian Allgeier <bastian@getkirby.com>
link:      https://getkirby.com
copyright: Bastian Allgeier
license:   https://opensource.org/licenses/MIT
```

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