diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 43a22651747ad..bea8a913e40f4 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -329,8 +329,8 @@ public function getCalendarsForUser($principalUri) {
 					'id' => $row['id'],
 					'uri' => $row['uri'],
 					'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-					'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-					'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+					'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+					'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 					'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 					'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
 					'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
@@ -411,8 +411,8 @@ public function getCalendarsForUser($principalUri) {
 					'id' => $row['id'],
 					'uri' => $uri,
 					'principaluri' => $this->convertPrincipal($principalUri, !$this->legacyEndpoint),
-					'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-					'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+					'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+					'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 					'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 					'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp('transparent'),
 					'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
@@ -461,8 +461,8 @@ public function getUsersOwnCalendars($principalUri) {
 				'id' => $row['id'],
 				'uri' => $row['uri'],
 				'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+				'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
 			];
@@ -513,8 +513,8 @@ public function getPublicCalendars() {
 				'id' => $row['id'],
 				'uri' => $row['publicuri'],
 				'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+				'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+				'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 				'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
 				'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], $this->legacyEndpoint),
@@ -578,8 +578,8 @@ public function getPublicCalendar($uri) {
 			'id' => $row['id'],
 			'uri' => $row['publicuri'],
 			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+			'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
 			'{' . \OCA\DAV\DAV\Sharing\Plugin::NS_OWNCLOUD . '}owner-principal' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
@@ -632,8 +632,8 @@ public function getCalendarByUri($principal, $uri) {
 			'id' => $row['id'],
 			'uri' => $row['uri'],
 			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
+			'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
 		];
@@ -680,7 +680,7 @@ public function getCalendarById(int $calendarId): ?array {
 			'id' => $row['id'],
 			'uri' => $row['uri'],
 			'principaluri' => $this->convertPrincipal($row['principaluri'], !$this->legacyEndpoint),
-			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken']?$row['synctoken']:'0'),
+			'{' . Plugin::NS_CALENDARSERVER . '}getctag' => 'http://sabre.io/ns/sync/' . ($row['synctoken'] ?: '0'),
 			'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?? 0,
 			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet($components),
 			'{' . Plugin::NS_CALDAV . '}schedule-calendar-transp' => new ScheduleCalendarTransp($row['transparent']?'transparent':'opaque'),
@@ -726,7 +726,7 @@ public function getSubscriptionById($subscriptionId) {
 			'source' => $row['source'],
 			'lastmodified' => $row['lastmodified'],
 			'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
-			'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+			'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 		];
 
 		return $this->rowToSubscription($row, $subscription);
@@ -2560,7 +2560,7 @@ public function getSubscriptionsForUser($principalUri) {
 				'lastmodified' => $row['lastmodified'],
 
 				'{' . Plugin::NS_CALDAV . '}supported-calendar-component-set' => new SupportedCalendarComponentSet(['VTODO', 'VEVENT']),
-				'{http://sabredav.org/ns}sync-token' => $row['synctoken']?$row['synctoken']:'0',
+				'{http://sabredav.org/ns}sync-token' => $row['synctoken'] ?: '0',
 			];
 
 			$subscriptions[] = $this->rowToSubscription($row, $subscription);
diff --git a/apps/files_external/lib/Controller/StoragesController.php b/apps/files_external/lib/Controller/StoragesController.php
index fd004b49b3786..ab580987b0e74 100644
--- a/apps/files_external/lib/Controller/StoragesController.php
+++ b/apps/files_external/lib/Controller/StoragesController.php
@@ -228,7 +228,7 @@ protected function updateStorageStatus(StorageConfig &$storage, $testOnly = true
 				)
 			);
 		} catch (InsufficientDataForMeaningfulAnswerException $e) {
-			$status = $e->getCode() ? $e->getCode() : StorageNotAvailableException::STATUS_INDETERMINATE;
+			$status = $e->getCode() ?: StorageNotAvailableException::STATUS_INDETERMINATE;
 			$storage->setStatus(
 				(int)$status,
 				$this->l10n->t('Insufficient data: %s', [$e->getMessage()])
diff --git a/apps/files_sharing/lib/External/Manager.php b/apps/files_sharing/lib/External/Manager.php
index 9d008170e6814..a3226e9f3dd5b 100644
--- a/apps/files_sharing/lib/External/Manager.php
+++ b/apps/files_sharing/lib/External/Manager.php
@@ -119,7 +119,7 @@ public function __construct(
 	 * @throws \Doctrine\DBAL\Exception
 	 */
 	public function addShare($remote, $token, $password, $name, $owner, $shareType, $accepted = false, $user = null, $remoteId = '', $parent = -1) {
-		$user = $user ? $user : $this->uid;
+		$user = $user ?? $this->uid;
 		$accepted = $accepted ? IShare::STATUS_ACCEPTED : IShare::STATUS_PENDING;
 		$name = Filesystem::normalizePath('/' . $name);
 
diff --git a/apps/updatenotification/tests/BackgroundJob/UpdateAvailableNotificationsTest.php b/apps/updatenotification/tests/BackgroundJob/UpdateAvailableNotificationsTest.php
index ca488fd301499..dccccf1a94025 100644
--- a/apps/updatenotification/tests/BackgroundJob/UpdateAvailableNotificationsTest.php
+++ b/apps/updatenotification/tests/BackgroundJob/UpdateAvailableNotificationsTest.php
@@ -286,7 +286,7 @@ public function testCreateNotifications(string $app, string $version, $lastNotif
 		$this->appConfig->expects($this->once())
 			->method('getAppValueString')
 			->with($app, '')
-			->willReturn($lastNotification ? $lastNotification : '');
+			->willReturn($lastNotification ?: '');
 
 		if ($lastNotification !== $version) {
 			$this->appConfig->expects($this->once())
diff --git a/apps/user_ldap/lib/User/User.php b/apps/user_ldap/lib/User/User.php
index b500c72ca98be..3423455e819a3 100644
--- a/apps/user_ldap/lib/User/User.php
+++ b/apps/user_ldap/lib/User/User.php
@@ -646,8 +646,7 @@ private function updateProfile(array $profileValues): void {
 			try {
 				$accountProperty = $account->getProperty($property);
 				$currentValue = $accountProperty->getValue();
-				$scope = ($accountProperty->getScope() ? $accountProperty->getScope()
-					: $defaultScopes[$property]);
+				$scope = ($accountProperty->getScope() ?: $defaultScopes[$property]);
 			} catch (PropertyDoesNotExistException $e) { // thrown at getProperty
 				$this->logger->error('property does not exist: '.$property
 					.' for uid='.$this->uid.'', ['app' => 'user_ldap', 'exception' => $e]);
diff --git a/apps/weather_status/lib/Service/WeatherStatusService.php b/apps/weather_status/lib/Service/WeatherStatusService.php
index da0ee855e857d..6aee18c0618bc 100644
--- a/apps/weather_status/lib/Service/WeatherStatusService.php
+++ b/apps/weather_status/lib/Service/WeatherStatusService.php
@@ -121,7 +121,7 @@ public function setLocation(?string $address, ?float $lat, ?float $lon): array {
 			$this->config->setUserValue($this->userId, Application::APP_ID, 'lon', strval($lon));
 			// resolve and store formatted address
 			$address = $this->resolveLocation($lat, $lon);
-			$address = $address ? $address : $this->l10n->t('Unknown address');
+			$address = $address ?: $this->l10n->t('Unknown address');
 			$this->config->setUserValue($this->userId, Application::APP_ID, 'address', $address);
 			// get and store altitude
 			$altitude = $this->getAltitude($lat, $lon);
diff --git a/lib/private/Log/LogDetails.php b/lib/private/Log/LogDetails.php
index 95b09c0a18187..bd18eb983dbdf 100644
--- a/lib/private/Log/LogDetails.php
+++ b/lib/private/Log/LogDetails.php
@@ -37,7 +37,7 @@ public function logDetails(string $app, $message, int $level): array {
 		$url = ($request->getRequestUri() !== '') ? $request->getRequestUri() : '--';
 		$method = is_string($request->getMethod()) ? $request->getMethod() : '--';
 		if ($this->config->getValue('installed', false)) {
-			$user = \OC_User::getUser() ? \OC_User::getUser() : '--';
+			$user = \OC_User::getUser() ?? '--';
 		} else {
 			$user = '--';
 		}
diff --git a/lib/private/User/Database.php b/lib/private/User/Database.php
index a80cc39a73276..2d3808e9dc773 100644
--- a/lib/private/User/Database.php
+++ b/lib/private/User/Database.php
@@ -64,7 +64,7 @@ class Database extends ABackend implements
 	public function __construct($eventDispatcher = null, $table = 'users') {
 		$this->cache = new CappedMemoryCache();
 		$this->table = $table;
-		$this->eventDispatcher = $eventDispatcher ? $eventDispatcher : \OCP\Server::get(IEventDispatcher::class);
+		$this->eventDispatcher = $eventDispatcher ?? \OCP\Server::get(IEventDispatcher::class);
 	}
 
 	/**