Fix psalm spotted errors with new requirements

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

apps/dav/lib/Connector/Sabre/File.php

 			if ($result === false) {
 				$expected = -1;
 				if (isset($_SERVER['CONTENT_LENGTH'])) {
-					$expected = $_SERVER['CONTENT_LENGTH'];
+					$expected = (int)$_SERVER['CONTENT_LENGTH'];
 				}
-				if ($expected !== "0") {
+				if ($expected !== 0) {
 					throw new Exception(
 						$this->l10n->t(
 							'Error while copying file to target location (copied: %1$s, expected filesize: %2$s)',

apps/dav/lib/Provisioning/Apple/AppleProvisioningPlugin.php

 use Sabre\HTTP\ResponseInterface;
 
 class AppleProvisioningPlugin extends ServerPlugin {
-
 	/**
 	 * @var Server
 	 */
 	protected $l10n;
 
 	/**
-	 * @var \closure
+	 * @var \Closure
 	 */
 	protected $uuidClosure;
 
 	/**
 	 * AppleProvisioningPlugin constructor.
-	 *
-	 * @param IUserSession $userSession
-	 * @param IURLGenerator $urlGenerator
-	 * @param \OC_Defaults $themingDefaults
-	 * @param IRequest $request
-	 * @param IL10N $l10n
-	 * @param \closure $uuidClosure
 	 */
-	public function __construct(IUserSession $userSession, IURLGenerator $urlGenerator,
-								\OC_Defaults $themingDefaults, IRequest $request,
-								IL10N $l10n, \closure $uuidClosure) {
+	public function __construct(
+		IUserSession $userSession,
+		IURLGenerator $urlGenerator,
+		\OC_Defaults $themingDefaults,
+		IRequest $request,
+		IL10N $l10n,
+		\Closure $uuidClosure
+	) {
 		$this->userSession = $userSession;
 		$this->urlGenerator = $urlGenerator;
 		$this->themingDefaults = $themingDefaults;

apps/user_ldap/ajax/wizard.php

 			\OC_JSON::error(['message' => $l->t('No data specified')]);
 			exit;
 		}
+		if (is_array($key)) {
+			\OC_JSON::error(['message' => $l->t('Invalid data specified')]);
+			exit;
+		}
 		$cfg = [$key => $val];
 		$setParameters = [];
 		$configuration->setConfiguration($cfg, $setParameters);

apps/user_ldap/lib/Mapping/AbstractMapping.php

 namespace OCA\User_LDAP\Mapping;
 
 use Doctrine\DBAL\Exception;
+use Doctrine\DBAL\Platforms\SqlitePlatform;
 use OCP\DB\IPreparedStatement;
 use OCP\DB\QueryBuilder\IQueryBuilder;
-use Doctrine\DBAL\Platforms\SqlitePlatform;
 
 /**
  * Class AbstractMapping
 	 * Get the hash to store in database column ldap_dn_hash for a given dn
 	 */
 	protected function getDNHash(string $fdn): string {
-		$hash = hash('sha256', $fdn, false);
-		if (is_string($hash)) {
-			return $hash;
-		} else {
-			throw new \RuntimeException('hash function did not return a string');
-		}
+		return hash('sha256', $fdn, false);
 	}
 
 	/**

apps/weather_status/lib/Service/WeatherStatusService.php

  */
 namespace OCA\WeatherStatus\Service;
 
-use OCP\IConfig;
-use OCP\IL10N;
-use OCP\App\IAppManager;
+use OCA\WeatherStatus\AppInfo\Application;
 use OCP\Accounts\IAccountManager;
 use OCP\Accounts\PropertyDoesNotExistException;
-use OCP\IUserManager;
-use OCP\Http\Client\IClientService;
+use OCP\App\IAppManager;
 use OCP\Http\Client\IClient;
-use OCP\ICacheFactory;
+use OCP\Http\Client\IClientService;
 use OCP\ICache;
+use OCP\ICacheFactory;
+use OCP\IConfig;
+use OCP\IL10N;
 use OCP\ILogger;
 
-use OCA\WeatherStatus\AppInfo\Application;
+use OCP\IUserManager;
 
 /**
  * Class WeatherStatusService
 				$cacheDuration = 60 * 60;
 				if (isset($headers['Expires']) && count($headers['Expires']) > 0) {
 					// if the Expires response header is set, use it to define cache duration
-					$expireTs = (new \Datetime($headers['Expires'][0]))->getTimestamp();
-					$nowTs = (new \Datetime())->getTimestamp();
+					$expireTs = (new \DateTime($headers['Expires'][0]))->getTimestamp();
+					$nowTs = (new \DateTime())->getTimestamp();
 					$duration = $expireTs - $nowTs;
 					if ($duration > $cacheDuration) {
 						$cacheDuration = $duration;

lib/private/Files/Storage/Wrapper/EncodingDirectoryWrapper.php

  */
 class EncodingDirectoryWrapper extends DirectoryWrapper {
 	/**
-	 * @return string
+	 * @return string|false
 	 */
 	public function dir_readdir() {
 		$file = readdir($this->source);

lib/private/KnownUser/KnownUserMapper.php

  * @method KnownUser mapRowToEntity(array $row)
  */
 class KnownUserMapper extends QBMapper {
-
 	/**
 	 * @param IDBConnection $db
 	 */
 		$query->delete($this->getTableName())
 			->where($query->expr()->eq('known_to', $query->createNamedParameter($knownTo)));
 
-		return (int) $query->execute();
+		return $query->executeStatement();
 	}
 
 	/**
 		$query->delete($this->getTableName())
 			->where($query->expr()->eq('known_user', $query->createNamedParameter($knownUser)));
 
-		return (int) $query->execute();
+		return $query->executeStatement();
 	}
 
 	/**

lib/private/LargeFileHelper.php

 	/**
 	 * @brief Checks whether our assumptions hold on the PHP platform we are on.
 	 *
-	 * @throws \RunTimeException if our assumptions do not hold on the current
+	 * @throws \RuntimeException if our assumptions do not hold on the current
 	 *                           PHP platform.
 	 */
 	public function __construct() {

lib/private/Preview/Office.php

 			[$dirname, , , $filename] = array_values(pathinfo($absPath));
 			$pngPreview = $tmpDir . '/' . $filename . '.png';
 
-			$png = new \imagick($pngPreview . '[0]');
+			$png = new \Imagick($pngPreview . '[0]');
 			$png->setImageFormat('jpg');
 		} catch (\Exception $e) {
 			$this->cleanTmpFiles();