diff --git a/curweather/curweather.php b/curweather/curweather.php
index 9aa8584a..e5e2710d 100644
--- a/curweather/curweather.php
+++ b/curweather/curweather.php
@@ -29,10 +29,10 @@ function getWeather($loc, $units = 'metric', $lang = 'en', $appid = '', $cacheti
 	$now = new DateTime();
 
 	if (!is_null($cached)) {
-		$cdate = DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'curweather', 'last');
+		$cdate = (int) DI::pConfig()->get(DI::userSession()->getLocalUserId(), 'curweather', 'last');
 		$cached = unserialize($cached);
 
-		if ($cdate + $cachetime > $now->getTimestamp()) {
+		if ($cdate + (int) $cachetime > $now->getTimestamp()) {
 			return $cached;
 		}
 	}
diff --git a/js_upload/file-uploader/server/php.php b/js_upload/file-uploader/server/php.php
index 2248c8f0..ff485dec 100644
--- a/js_upload/file-uploader/server/php.php
+++ b/js_upload/file-uploader/server/php.php
@@ -77,10 +77,10 @@ class qqFileUploader {
 	public function __construct(array $allowedExtensions = [], $sizeLimit = 10485760)
 	{
 		$allowedExtensions = array_map('strtolower', $allowedExtensions);
-			
+
 		$this->allowedExtensions = $allowedExtensions;
 		$this->sizeLimit = $sizeLimit;
-		
+
 		$this->checkServerSettings();
 
 		if (isset($_GET['qqfile'])) {
@@ -88,7 +88,7 @@ class qqFileUploader {
 		} elseif (isset($_FILES['qqfile'])) {
 			$this->file = new qqUploadedFileForm();
 		} else {
-			$this->file = false; 
+			$this->file = false;
 		}
 	}
 
@@ -105,7 +105,7 @@ class qqFileUploader {
 
 	private function toBytes(string $str): int
 	{
-		$val = trim($str);
+		$val = (int) trim($str);
 		$last = strtolower($str[strlen($str) - 1]);
 
 		switch($last) {
diff --git a/js_upload/js_upload.php b/js_upload/js_upload.php
index 0d045dee..f1d85aa3 100644
--- a/js_upload/js_upload.php
+++ b/js_upload/js_upload.php
@@ -60,7 +60,7 @@ function js_upload_post_init(array &$b)
 	// max file size in bytes
 	$sizeLimit = Strings::getBytesFromShorthand(DI::config()->get('system', 'maximagesize'));
 
-	$uploader = new qqFileUploader($allowedExtensions, $sizeLimit);
+	$uploader = new js_upload_qqFileUploader($allowedExtensions, $sizeLimit);
 
 	$result = $uploader->handleUpload();
 
@@ -101,7 +101,7 @@ function js_upload_post_end(int &$b)
 /**
  * Handle file uploads via XMLHttpRequest
  */
-class qqUploadedFileXhr
+class js_upload_qqUploadedFileXhr
 {
 	private $pathnm = '';
 
@@ -155,7 +155,7 @@ class qqUploadedFileXhr
 /**
  * Handle file uploads via regular form post (uses the $_FILES array)
  */
-class qqUploadedFileForm
+class js_upload_qqUploadedFileForm
 {
 	/**
 	 * Save the file to the specified path
@@ -183,7 +183,7 @@ class qqUploadedFileForm
 	}
 }
 
-class qqFileUploader
+class js_upload_qqFileUploader
 {
 	private $allowedExtensions;
 	private $sizeLimit;
@@ -197,9 +197,9 @@ class qqFileUploader
 		$this->sizeLimit = $sizeLimit;
 
 		if (isset($_GET['qqfile'])) {
-			$this->file = new qqUploadedFileXhr();
+			$this->file = new js_upload_qqUploadedFileXhr();
 		} elseif (isset($_FILES['qqfile'])) {
-			$this->file = new qqUploadedFileForm();
+			$this->file = new js_upload_qqUploadedFileForm();
 		} else {
 			$this->file = false;
 		}
diff --git a/mailstream/phpmailer/class.phpmailer.php b/mailstream/phpmailer/class.phpmailer.php
index 1d9df9af..8cd05a2c 100644
--- a/mailstream/phpmailer/class.phpmailer.php
+++ b/mailstream/phpmailer/class.phpmailer.php
@@ -1519,7 +1519,6 @@ class PHPMailer
     public function getSMTPInstance()
     {
         if (!is_object($this->smtp)) {
-            /** @phpstan-ignore-next-line file class.smtp.php does not exist */
             $this->smtp = new SMTP;
         }
         return $this->smtp;
diff --git a/membersince/membersince.php b/membersince/membersince.php
index f8128eb7..448b8cf2 100644
--- a/membersince/membersince.php
+++ b/membersince/membersince.php
@@ -7,9 +7,9 @@
  * Status: Unsupported
  */
 
-use Friendica\App;
 use Friendica\Core\Hook;
 use Friendica\DI;
+use Friendica\Model\User;
 use Friendica\Util\DateTimeFormat;
 
 function membersince_install()
@@ -19,7 +19,19 @@ function membersince_install()
 
 function membersince_display(array &$b)
 {
-	if (DI::app()->getCurrentTheme() == 'frio') {
+	$uid = DI::userSession()->getLocalUserId();
+
+	if ($uid === false) {
+		return;
+	}
+
+	$user = User::getById($uid, ['register_date']);
+
+	if ($user === false || !array_key_exists('register_date', $user)) {
+		return;
+	}
+
+	if (DI::appHelper()->getCurrentTheme() == 'frio') {
 		// Works in Frio.
 		$doc = new DOMDocument();
 		$doc->loadHTML(mb_convert_encoding($b, 'HTML-ENTITIES', 'UTF-8'));
@@ -39,7 +51,7 @@ function membersince_display(array &$b)
 		$label->setAttribute('class', 'col-lg-4 col-md-4 col-sm-4 col-xs-12 profile-label-name text-muted');
 
 		// The div for the register date of the profile owner.
-		$entry = $doc->createElement('div', DateTimeFormat::local(DI::app()->profile['register_date']));
+		$entry = $doc->createElement('div', DateTimeFormat::local($user['register_date']));
 		$entry->setAttribute('class', 'col-lg-8 col-md-8 col-sm-8 col-xs-12 profile-entry');
 
 		$div->appendChild($hr);
@@ -50,6 +62,6 @@ function membersince_display(array &$b)
 		$b = $doc->saveHTML();
 	} else {
 		// Works in Vier.
-		$b = preg_replace('/<\/dl>/', "</dl>\n\n\n<dl id=\"aprofile-membersince\" class=\"aprofile\">\n<dt>" . DI::l10n()->t('Member since:') . "</dt>\n<dd>" . DateTimeFormat::local(DI::app()->profile['register_date']) . "</dd>\n</dl>", $b, 1);
+		$b = preg_replace('/<\/dl>/', "</dl>\n\n\n<dl id=\"aprofile-membersince\" class=\"aprofile\">\n<dt>" . DI::l10n()->t('Member since:') . "</dt>\n<dd>" . DateTimeFormat::local($user['register_date']) . "</dd>\n</dl>", $b, 1);
 	}
 }
diff --git a/pnut/lib/phpnut.php b/pnut/lib/phpnut.php
index 89d5e5f8..ff765243 100644
--- a/pnut/lib/phpnut.php
+++ b/pnut/lib/phpnut.php
@@ -108,7 +108,7 @@ class phpnut
     /**
      * Constructs an phpnut PHP object with the specified client ID and
      * client secret.
-     * @param string $client_id The client ID you received from pnut.io when
+     * @param string $client_id_or_token The client ID you received from pnut.io when
      * creating your app.
      * @param string $client_secret The client secret you received from
      * pnut.io when creating your app.
@@ -161,7 +161,7 @@ class phpnut
      * or not access to your app. Usually you would place this as a link for
      * the user to client, or a redirect to send them to the auth URL.
      * Also can be called after authentication for additional scopes
-     * @param string $callbackUri Where you want the user to be directed
+     * @param string $callback_uri Where you want the user to be directed
      * after authenticating with pnut.io. This must be one of the URIs
      * allowed by your pnut.io application settings.
      * @param array $scope An array of scopes (permissions) you wish to obtain
@@ -748,7 +748,7 @@ class phpnut
      * Delete a Post. The current user must be the same user who created the Post.
      * It returns the deleted Post on success.
      * @param integer $post_id The ID of the post to delete
-     * @param array An associative array representing the post that was deleted
+     * @return array An associative array representing the post that was deleted
      */
     public function deletePost(int $post_id)
     {
@@ -1296,7 +1296,7 @@ class phpnut
 
     /**
      * List the users who match a specific search term
-     * @param string $search The search query. Supports @username or #tag searches as
+     * @param string $query The search query. Supports @username or #tag searches as
      * well as normal search terms. Searches username, display name, bio information.
      * Does not search posts.
      * @return array|false An array of associative arrays, each representing one user.
@@ -2023,7 +2023,7 @@ class phpnut
     /**
      * Responds to a poll.
      * @param integer $poll_id The ID of the poll to respond to
-     * @param array list of positions for the poll response
+     * @param array $positions list of positions for the poll response
      * @param array $params An associative array of optional general parameters.
      */
     public function respondToPoll(int $poll_id, array $positions, array $params=[])
@@ -2098,8 +2098,6 @@ class phpnut
      * List the polls that match a specific search term
      * @param array $params a list of filter, search query, and general Poll parameters
      * see: https://docs.pnut.io/resources/channels/search
-     * @param string $query The search query. Supports
-     * normal search terms.
      * @return array An array of associative arrays, each representing one poll.
      * or false on error
      */
@@ -2179,14 +2177,12 @@ class phpnut
         );
     }
 
-
-
     /**
      * Registers your function (or an array of object and method) to be called
      * whenever an event is received via an open pnut.io stream. Your function
      * will receive a single parameter, which is the object wrapper containing
      * the meta and data.
-     * @param mixed A PHP callback (either a string containing the function name,
+     * @param mixed $function A PHP callback (either a string containing the function name,
      * or an array where the first element is the class/object and the second
      * is the method).
      */
@@ -2247,7 +2243,6 @@ class phpnut
 
     /**
      * Close the currently open stream.
-     * @return true;
      */
     public function closeStream(): void
     {
@@ -2460,7 +2455,7 @@ class phpnut
      * Process an open stream for x microseconds, then return. This is useful if you want
      * to be doing other things while processing the stream. If you just want to
      * consume the stream without other actions, you can call processForever() instead.
-     * @param float @microseconds The number of microseconds to process for before
+     * @param null|float $microseconds The number of microseconds to process for before
      * returning. There are 1,000,000 microseconds in a second.
      *
      * @return void
diff --git a/showmore/showmore.php b/showmore/showmore.php
index 8e85925a..e326aa98 100644
--- a/showmore/showmore.php
+++ b/showmore/showmore.php
@@ -8,7 +8,6 @@
  *
  */
 
-use Friendica\App;
 use Friendica\Core\Hook;
 use Friendica\Core\Renderer;
 use Friendica\DI;
@@ -79,6 +78,7 @@ function get_body_length($body)
 	 * Checking any possible syntax of the style attribute with xpath is impossible
 	 * So we just get any element with a style attribute, and check them with a regexp
 	 */
+	/** @var DOMNodeList $xr */
 	$xr = $xpath->query('//*[@style]');
 	foreach ($xr as $node) {
 		if (preg_match('/.*display: *none *;.*/',$node->getAttribute('style'))) {
diff --git a/statusnet/library/codebirdsn.php b/statusnet/library/codebirdsn.php
index 91e256be..9807d97f 100644
--- a/statusnet/library/codebirdsn.php
+++ b/statusnet/library/codebirdsn.php
@@ -54,6 +54,8 @@ unset($id);
  *
  * @package codebird
  * @subpackage codebird-php
+ *
+ * @method object statuses_update(array $postdata)
  */
 class CodebirdSN
 {
@@ -116,7 +118,7 @@ class CodebirdSN
      * Returns singleton class instance
      * Always use this method unless you're working with multiple authenticated users at once
      *
-     * @return Codebird The instance
+     * @return CodebirdSN The instance
      */
     public static function getInstance()
     {
@@ -420,6 +422,7 @@ class CodebirdSN
                 }
                 break;
             case CODEBIRD_RETURNFORMAT_OBJECT:
+                /** @var object $reply */
                 $reply->httpstatus = $httpstatus;
                 if ($httpstatus == 200) {
                     self::setBearerToken($reply->access_token);
@@ -490,7 +493,7 @@ class CodebirdSN
     /**
      * Generates a (hopefully) unique random string
      *
-     * @param int optional $length The length of the string to generate
+     * @param int $length The optional length of the string to generate
      *
      * @return string The random string
      */
@@ -505,9 +508,9 @@ class CodebirdSN
     /**
      * Generates an OAuth signature
      *
-     * @param string          $httpmethod Usually either 'GET' or 'POST' or 'DELETE'
-     * @param string          $method     The API method to call
-     * @param array  optional $params     The API call parameters, associative
+     * @param string $httpmethod Usually either 'GET' or 'POST' or 'DELETE'
+     * @param string $method     The API method to call
+     * @param array  $params     optional The API call parameters, associative
      *
      * @return string Authorization HTTP header
      */
@@ -871,12 +874,12 @@ class CodebirdSN
     /**
      * Calls the API using cURL
      *
-     * @param string          $httpmethod      The HTTP method to use for making the request
-     * @param string          $method          The API method to call
-     * @param string          $method_template The templated API method to call
-     * @param array  optional $params          The parameters to send along
-     * @param bool   optional $multipart       Whether to use multipart/form-data
-     * @param bool   optional $app_only_auth   Whether to use app-only bearer authentication
+     * @param string $httpmethod      The HTTP method to use for making the request
+     * @param string $method          The API method to call
+     * @param string $method_template The templated API method to call
+     * @param array  $params          optional The parameters to send along
+     * @param bool   $multipart       optional Whether to use multipart/form-data
+     * @param bool   $app_only_auth   optional Whether to use app-only bearer authentication
      *
      * @return mixed The API reply, encoded in the set return_format
      */
@@ -959,6 +962,7 @@ class CodebirdSN
         $httpstatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
         $reply = $this->_parseApiReply($method_template, $reply);
         if ($this->_return_format == CODEBIRD_RETURNFORMAT_OBJECT) {
+            /** @var object $reply */
             $reply->httpstatus = $httpstatus;
         } elseif ($this->_return_format == CODEBIRD_RETURNFORMAT_ARRAY) {
             $reply['httpstatus'] = $httpstatus;
diff --git a/statusnet/library/statusnetoauth.php b/statusnet/library/statusnetoauth.php
index c9bb0163..c32b2b4f 100644
--- a/statusnet/library/statusnetoauth.php
+++ b/statusnet/library/statusnetoauth.php
@@ -52,11 +52,6 @@ class StatusNetOAuth extends TwitterOAuth
 	 *
 	 * Copied here from the TwitterOAuth library and complemented by applying the proxy settings of Friendica
 	 *
-	 * @param string $method
-	 * @param string $host
-	 * @param string $path
-	 * @param array  $parameters
-	 *
 	 * @return array|object API results
 	 */
 	function http($url, $method, $postfields = NULL)
diff --git a/statusnet/library/twitteroauth.php b/statusnet/library/twitteroauth.php
index b33b5f9d..bf413d23 100644
--- a/statusnet/library/twitteroauth.php
+++ b/statusnet/library/twitteroauth.php
@@ -93,7 +93,7 @@ class TwitterOAuth
 	/**
 	 * Get a request_token
 	 *
-	 * @param callback $oauth_callback
+	 * @param callable $oauth_callback
 	 * @return array
 	 */
 	function getRequestToken($oauth_callback = null)
@@ -112,8 +112,6 @@ class TwitterOAuth
 	/**
 	 * Get the authorize URL
 	 *
-	 * @param array $token
-	 * @param bool $sign_in_with_tumblr
 	 * @return string
 	 */
 	function getAuthorizeURL($token, $sign_in_with_twitter = TRUE)
diff --git a/tesseract/tesseract.php b/tesseract/tesseract.php
index b3e1feb6..4c630dbb 100644
--- a/tesseract/tesseract.php
+++ b/tesseract/tesseract.php
@@ -26,6 +26,7 @@ function tesseract_ocr_detection(&$media)
 	try {
 		$languages = $ocr->availableLanguages();
 		if ($languages) {
+			/** @phpstan-ignore-next-line ignore call of \thiagoalessio\TesseractOCR\Option::lang() */
 			$ocr->lang(implode('+', $languages));
 		}
 		$ocr->tempDir(System::getTempPath());
@@ -33,5 +34,5 @@ function tesseract_ocr_detection(&$media)
 		$media['description'] = $ocr->run();
 	} catch (\Throwable $th) {
 		Logger::info('Error calling TesseractOCR', ['message' => $th->getMessage()]);
-	}			
+	}
 }