Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php | ||
| 17 | class AppConfig { | ||
| 18 | |||
| 19 | private $defaults = [ | ||
| 20 | 'wopi_url' => 'https://localhost:9980', | ||
| 21 | 		'watermark_text' => '{userId}', | ||
| 22 | 'watermark_allGroupsList' => [], | ||
| 23 | 'watermark_allTagsList' => [], | ||
| 24 | 'watermark_linkTagsList' => [], | ||
| 25 | |||
| 26 | ]; | ||
| 27 | |||
| 28 | const WATERMARK_APP_NAMESPACE = 'files'; | ||
| 29 | |||
| 30 | const APP_SETTING_TYPES = [ | ||
| 31 | 'watermark_allGroupsList' => 'array', | ||
| 32 | 'watermark_allTagsList' => 'array', | ||
| 33 | 'watermark_linkTagsList' => 'array' | ||
| 34 | ]; | ||
| 35 | |||
| 36 | /** @var IConfig */ | ||
| 37 | private $config; | ||
| 38 | |||
| 39 | 	public function __construct(IConfig $config) { | ||
| 42 | |||
| 43 | 	public function getAppNamespace($key) { | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Get a value by key | ||
| 52 | * @param string $key | ||
| 53 | * @return string | ||
| 54 | */ | ||
| 55 | 	public function getAppValue($key) { | ||
| 62 | |||
| 63 | /** | ||
| 64 | * @param $key | ||
| 65 | * @return array | ||
| 66 | */ | ||
| 67 | 	public function getAppValueArray($key) { | ||
| 74 | |||
| 75 | /** | ||
| 76 | * Set a value by key | ||
| 77 | * @param string $key | ||
| 78 | * @param string $value | ||
| 79 | * @return void | ||
| 80 | */ | ||
| 81 | 	public function setAppValue($key, $value) { | ||
| 84 | |||
| 85 | /** | ||
| 86 | * Get all app settings | ||
| 87 | * @return array | ||
| 88 | */ | ||
| 89 | 	public function getAppSettings() { | ||
| 108 | |||
| 109 | } | ||
| 110 | 
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: