diff --git a/contributions/page.blocks/controller/base/templated.block.cls.php b/contributions/page.blocks/controller/base/templated.block.cls.php
index 66a77032..c3a8ba04 100644
--- a/contributions/page.blocks/controller/base/templated.block.cls.php
+++ b/contributions/page.blocks/controller/base/templated.block.cls.php
@@ -38,7 +38,7 @@ public function __construct($name, $title, $template, $index = 1000, $position =
 	 * @return IView
 	 */
 	protected function create_view($template) {
-		$view = ViewFactory::create_view(IViewFactory::MESSAGE, $template, $page_data);
+		$view = ViewFactory::create_view(IViewFactory::MESSAGE, $template);
 		$view->assign('block', $this);
 		$this->configure_view($view);					
 		return $view;
diff --git a/gyro/core/behaviour/base/commandbase.cls.php b/gyro/core/behaviour/base/commandbase.cls.php
index 769159b5..e2e9f83f 100644
--- a/gyro/core/behaviour/base/commandbase.cls.php
+++ b/gyro/core/behaviour/base/commandbase.cls.php
@@ -179,7 +179,7 @@ protected function serialize_params($params) {
 			$arr = array();
 			foreach($params as $key => $value) {
 				$arr[] = $key;
-				$arr[] = $value;
+				$arr[] = is_array($value) ? serialize($value) : $value;
 			}
 			$ret = implode(GYRO_COMMAND_SEP, $arr);
 		}
diff --git a/gyro/core/controller/base/renderdecorators/cacherenderdecorator.cls.php b/gyro/core/controller/base/renderdecorators/cacherenderdecorator.cls.php
index 6f9fe31d..10b7cb43 100644
--- a/gyro/core/controller/base/renderdecorators/cacherenderdecorator.cls.php
+++ b/gyro/core/controller/base/renderdecorators/cacherenderdecorator.cls.php
@@ -13,7 +13,7 @@ class CacheRenderDecorator extends RenderDecoratorBase {
 	 *
 	 * @var ICacheManager
 	 */
-	private $chache_manager = null;
+	private $cache_manager = null;
 
 	/**
 	 * Constructor
diff --git a/gyro/core/controller/base/routes/parameterizedroute.cls.php b/gyro/core/controller/base/routes/parameterizedroute.cls.php
index 44458e4c..b7dc1a13 100644
--- a/gyro/core/controller/base/routes/parameterizedroute.cls.php
+++ b/gyro/core/controller/base/routes/parameterizedroute.cls.php
@@ -406,7 +406,7 @@ protected function build_url_path($params) {
 						$path = $this->replace_path_variable($path, $v, $params->$func_name());
 					}
 				} else {
-					$path = $this->replace_path_variable($path, $v, $params->$v);
+					$path = $this->replace_path_variable($path, $v, $params->$v ?? null);
 				}
 			}
 		} else if (is_array($params)) {
diff --git a/gyro/core/controller/tools/sorter.cls.php b/gyro/core/controller/tools/sorter.cls.php
index 54960c21..c8dcaabd 100644
--- a/gyro/core/controller/tools/sorter.cls.php
+++ b/gyro/core/controller/tools/sorter.cls.php
@@ -109,7 +109,7 @@ public function prepare_view($view) {
 		}
 
 		$this->sorter_data['columns'] = $arr_colums;
-		$this->sorter_data['current_column'] = $current_column;
+		$this->sorter_data['current_column'] = $current_column ?? null;
 		$view->assign('sorter_data', $this->sorter_data);
 	}
 	
diff --git a/gyro/core/lib/components/mailmessage.cls.php b/gyro/core/lib/components/mailmessage.cls.php
index 79859505..ebd398d7 100644
--- a/gyro/core/lib/components/mailmessage.cls.php
+++ b/gyro/core/lib/components/mailmessage.cls.php
@@ -262,7 +262,7 @@ protected function safety_check_exploit_strings(&$value, $type, $beginLineOnly =
 		);
 		$temp = preg_replace($find, '**!HEADERINJECTION!**', $value);
 		if (strpos($temp, '**!HEADERINJECTION!**') !== false) {
-			$err->append('%type: "To:", "Bcc:", "Subject:" and other reserved words are not allowed.', 'core', array('%type' => $type));
+			$err->append(tr('%type: "To:", "Bcc:", "Subject:" and other reserved words are not allowed.', 'core', array('%type' => $type)));
 		}
 
 		return $err;
diff --git a/gyro/core/lib/interfaces/idbwhere.cls.php b/gyro/core/lib/interfaces/idbwhere.cls.php
index 02b2ab27..8cddc661 100644
--- a/gyro/core/lib/interfaces/idbwhere.cls.php
+++ b/gyro/core/lib/interfaces/idbwhere.cls.php
@@ -7,7 +7,7 @@
  * @author Gerd Riesselmann
  * @ingroup Interfaces
  */
-interface IDBWhere extends IDBSQLBuilder {
+interface IDBWhere extends IDBSqlBuilder {
 	const LOGIC_AND = 'AND';
 	const LOGIC_OR = 'OR';
 
diff --git a/gyro/core/model/base/fields/dbfield.time.cls.php b/gyro/core/model/base/fields/dbfield.time.cls.php
index 6aebdb49..c1b150c8 100644
--- a/gyro/core/model/base/fields/dbfield.time.cls.php
+++ b/gyro/core/model/base/fields/dbfield.time.cls.php
@@ -24,7 +24,7 @@ protected function get_db_now_constant() {
 	 * @return string
 	 */
 	protected function format_date_value($value) {
-		return $this->quote(GyroDate::mysql_time($value, false));	
+		return $this->quote(GyroDate::mysql_time($value));
 	}	
 
 	/**
diff --git a/gyro/core/view/widgets/input/base/base.input.widget.php b/gyro/core/view/widgets/input/base/base.input.widget.php
index 37a3ead9..e72691e2 100644
--- a/gyro/core/view/widgets/input/base/base.input.widget.php
+++ b/gyro/core/view/widgets/input/base/base.input.widget.php
@@ -76,7 +76,7 @@ protected function input_build_widget($params, $name, $title, $value, $policy) {
  	 * Create default attribute array
 	 */
 	protected function create_default_attributes($params, $name, $policy) {
-		$id = strtr(arr::get_item($params, 'id', $name), '[]', '__');
+		$id = strtr(Arr::get_item($params, 'id', $name), '[]', '__');
 		$attrs = array(
 			'id' => $id
 		);
@@ -110,7 +110,7 @@ protected function render_label($widget, $html_attrs, $params, $name, $title, $v
 		$lbl_class = Arr::get_item($params, 'label:class', '');
 		$label = '';
 		if ($title) {
-			$notes = Cast::int(arr::get_item($params, 'notes', 0));
+			$notes = Cast::int(Arr::get_item($params, 'notes', 0));
 			if ($notes > 0) {
 				$title .= ' '. html::span(str_repeat('*', $notes), 'notes');
 			}
diff --git a/gyro/modules/json/lib/helpers/converters/json.cls.php b/gyro/modules/json/lib/helpers/converters/json.cls.php
index 369af08b..7905c6c8 100644
--- a/gyro/modules/json/lib/helpers/converters/json.cls.php
+++ b/gyro/modules/json/lib/helpers/converters/json.cls.php
@@ -64,7 +64,7 @@ public function encode($data, $params = false) {
 		include_once 'Services/JSON.php';
 		if (class_exists('Services_JSON')) {
 			$json = new Services_JSON();
-			return $json->encode($str);
+			return $json->encode($data);
 		}
 		throw new Exception(tr('No JSON implementation found', 'ajax'));		
 	}
diff --git a/gyro/modules/offline/enabled.inc.php b/gyro/modules/offline/enabled.inc.php
index 4b77fae7..8f6fee5f 100644
--- a/gyro/modules/offline/enabled.inc.php
+++ b/gyro/modules/offline/enabled.inc.php
@@ -10,4 +10,4 @@
  *   compatabile with Apache web server (and Lighttpd, eventually) only.
  */
 
-Load::enable_module('console', 'systemupdate');
+Load::enable_module(['console', 'systemupdate']);
diff --git a/gyro/modules/simpletest/3rdparty/simpletest/browser.php b/gyro/modules/simpletest/3rdparty/simpletest/browser.php
index 68b2739b..f392798f 100644
--- a/gyro/modules/simpletest/3rdparty/simpletest/browser.php
+++ b/gyro/modules/simpletest/3rdparty/simpletest/browser.php
@@ -18,8 +18,8 @@
 require_once dirname(__FILE__) . '/frames.php';
 require_once dirname(__FILE__) . '/user_agent.php';
 if (! SimpleTest::getParsers()) {
-    SimpleTest::setParsers(array(new SimpleTidyPageBuilder(), new SimplePHPPageBuilder()));
-    //SimpleTest::setParsers(array(new SimplePHPPageBuilder()));
+    SimpleTest::setParsers(array(new SimpleTidyPageBuilder(), new SimplePhpPageBuilder()));
+    //SimpleTest::setParsers(array(new SimplePhpPageBuilder()));
 }
 /**#@-*/
 
@@ -216,7 +216,7 @@ protected function createHistory()
      *    Get the HTML parser to use. Can be overridden by
      *    setParser. Otherwise scans through the available parsers and
      *    uses the first one which is available.
-     *    @return object SimplePHPPageBuilder or SimpleTidyPageBuilder
+     *    @return object SimplePhpPageBuilder or SimpleTidyPageBuilder
      */
     protected function getParser()
     {
diff --git a/gyro/modules/simpletest/3rdparty/simpletest/web_tester.php b/gyro/modules/simpletest/3rdparty/simpletest/web_tester.php
index 5a4fc505..38ac9843 100644
--- a/gyro/modules/simpletest/3rdparty/simpletest/web_tester.php
+++ b/gyro/modules/simpletest/3rdparty/simpletest/web_tester.php
@@ -523,7 +523,7 @@ public function setBrowser($browser)
 
     /**
      *    Sets the HTML parser to use within this browser.
-     *    @param object         The parser, one of SimplePHPPageBuilder or
+     *    @param object         The parser, one of SimplePhpPageBuilder or
      *                          SimpleTidyPageBuilder.
      */
     public function setParser($parser)