diff --git a/application/controllers/system/infocenter/InfoCenter.php b/application/controllers/system/infocenter/InfoCenter.php
index 59a471591..5119600b9 100644
--- a/application/controllers/system/infocenter/InfoCenter.php
+++ b/application/controllers/system/infocenter/InfoCenter.php
@@ -758,10 +758,10 @@ class InfoCenter extends Auth_Controller
 		$this->navigationlib->setSessionMenu(
 			array(
 				'back' => $this->navigationlib->oneLevel(
-					'<< Züruck',	// description
+					'Zurück',	// description
 					$link,			// link
 					array(),		// children
-					'',				// icon
+					'angle-left',	// icon
 					true			// expand
 				)
 			)
@@ -823,7 +823,7 @@ class InfoCenter extends Auth_Controller
 				'filters' => $this->navigationlib->oneLevel(
 					'Filter',					// description
 					'#',						// link
-					$filtersArray['children'],	// children
+					(isset($filtersArray['children'])?$filtersArray['children']:''),	// children
 					'',							// icon
 					true						// expand
 				)
diff --git a/application/libraries/FiltersLib.php b/application/libraries/FiltersLib.php
index 24ca0e27d..8a143f7c9 100644
--- a/application/libraries/FiltersLib.php
+++ b/application/libraries/FiltersLib.php
@@ -288,9 +288,10 @@ class FiltersLib
 	public function generateDatasetQuery($query, $filters)
 	{
 		$datasetQuery = 'SELECT * FROM ('.$query.') '.self::DATASET_TABLE_ALIAS;
+		$trimedval = trim($query);
 
 		// If the given query is valid and the parameter filters is an array
-		if (!empty(trim($query)) && $filters != null && is_array($filters))
+		if (!empty($trimedval) && $filters != null && is_array($filters))
 		{
 			$where = ''; // starts building the SQL where clause
 
@@ -299,9 +300,11 @@ class FiltersLib
 			{
 				$filterDefinition = $filters[$filtersCounter]; // definition of one filter
 
-				if ($filtersCounter > 0) $where .= ' AND '; // if it's NOT the last one
+				if ($filtersCounter > 0)
+					$where .= ' AND '; // if it's NOT the last one
 
-				if (!empty(trim($filterDefinition->name))) // if the name of the applied filter is valid
+				$trimedname = trim($filterDefinition->name);
+				if (!empty($trimedname)) // if the name of the applied filter is valid
 				{
 					// ...build the condition
 					$where .= '"'.$filterDefinition->name.'"'.$this->_getDatasetQueryCondition($filterDefinition);
@@ -341,15 +344,16 @@ class FiltersLib
 	public function getFilterName($filterJson)
 	{
 		$filterName = $filterJson->name; // always present, used as default
-
+		$trimedname = (isset($filterJson->namePhrase)?trim($filterJson->namePhrase):'');
 		// Filter name from phrases system
-		if (isset($filterJson->namePhrase) && !empty(trim($filterJson->namePhrase)))
+		if (isset($filterJson->namePhrase) && !empty($trimedname))
 		{
 			// Loads the library to use the phrases system
 			$this->_ci->load->library('PhrasesLib', array(self::FILTER_PHRASES_CATEGORY));
 
 			$tmpFilterNamePhrase = $this->_ci->phraseslib->t(self::FILTER_PHRASES_CATEGORY, $filterJson->namePhrase);
-			if (isset($tmpFilterNamePhrase) && !empty(trim($tmpFilterNamePhrase))) // if is not null or an empty string
+			$trimedphrase = (isset($tmpFilterNamePhrase)?trim($tmpFilterNamePhrase):'');
+			if (isset($tmpFilterNamePhrase) && !empty($trimedphrase)) // if is not null or an empty string
 			{
 				$filterName = $tmpFilterNamePhrase;
 			}
@@ -389,9 +393,9 @@ class FiltersLib
 	public function removeSelectedField($selectedField)
 	{
 		$removeSelectedField = false;
-
+		$trimedval = (isset($selectedField)?trim($selectedField):'');
 		// Checks the parameter selectedField
-		if (isset($selectedField) && !empty(trim($selectedField)))
+		if (isset($selectedField) && !empty($trimedval))
 		{
 			// Retrives all the used fields by the current filter
 			$fields = $this->getElementSession(self::SESSION_FIELDS);
@@ -423,9 +427,9 @@ class FiltersLib
 	public function addSelectedField($selectedField)
 	{
 		$removeSelectedField = false;
-
+		$trimedval = (isset($selectedField)?trim($selectedField):'');
 		// Checks the parameter selectedField
-		if (isset($selectedField) && !empty(trim($selectedField)))
+		if (isset($selectedField) && !empty($trimedval))
 		{
 			// Retrives all the used fields by the current filter
 			$fields = $this->getElementSession(self::SESSION_FIELDS);
@@ -452,9 +456,9 @@ class FiltersLib
 	public function removeAppliedFilter($appliedFilter)
 	{
 		$removeAppliedFilter = false;
-
+		$trimedval = (isset($appliedFilter)?trim($appliedFilter):'');
 		// Checks the parameter appliedFilter
-		if (isset($appliedFilter) && !empty(trim($appliedFilter)))
+		if (isset($appliedFilter) && !empty($trimedval))
 		{
 			// Retrives all the used fields by the current filter
 			$fields = $this->getElementSession(self::SESSION_FIELDS);
@@ -540,9 +544,9 @@ class FiltersLib
 	public function addFilter($filter)
 	{
 		$addFilter = false;
-
+		$trimedval = (isset($filter)?trim($filter):'');
 		// Checks the parameter filter
-		if (isset($filter) && !empty(trim($filter)))
+		if (isset($filter) && !empty($trimedval))
 		{
 			// Retrives all the used fields by the current filter
 			$fields = $this->getElementSession(self::SESSION_FIELDS);
@@ -583,9 +587,9 @@ class FiltersLib
 	public function saveCustomFilter($customFilterDescription)
 	{
 		$saveCustomFilter = false; // by default returns a failure
-
+		$trimedval = (isset($customFilterDescription)?trim($customFilterDescription):'');
 		// Checks parameter customFilterDescription if not valid stop the execution
-		if (!isset($customFilterDescription) || empty(trim($customFilterDescription)))
+		if (!isset($customFilterDescription) || empty($trimedval))
 		{
 			return $saveCustomFilter;
 		}
@@ -702,11 +706,11 @@ class FiltersLib
 	 */
 	private function _getFilterUniqueId($params)
 	{
-		//
+		$trimedval = (isset($params[self::FILTER_PAGE_PARAM])?trim($params[self::FILTER_PAGE_PARAM]):'');
 		if ($params != null
 			&& is_array($params)
 			&& isset($params[self::FILTER_PAGE_PARAM])
-			&& !empty(trim($params[self::FILTER_PAGE_PARAM])))
+			&& !empty($trimedval))
 		{
 			$filterUniqueId = $params[self::FILTER_PAGE_PARAM];
 		}
@@ -738,7 +742,8 @@ class FiltersLib
 		$condition = ''; // starts building the condition
 
 		// "operation" is a required property for the applied filter definition
-		if (!empty(trim($filterDefinition->operation)))
+		$trimedval = trim($filterDefinition->operation);
+		if (!empty($trimedval))
 		{
 			// Checks what operation is required
 			switch ($filterDefinition->operation)
@@ -813,7 +818,9 @@ class FiltersLib
 		}
 
 		// if the condition is valid
-		if (!empty(trim($condition))) $condition = ' '.$condition; // add a white space before
+		$trimedval = trim($condition);
+		if (!empty($trimedval))
+			$condition = ' '.$condition; // add a white space before
 
 		return $condition;
 	}
diff --git a/application/libraries/NavigationLib.php b/application/libraries/NavigationLib.php
index 4d2187e04..80b2aa5a2 100644
--- a/application/libraries/NavigationLib.php
+++ b/application/libraries/NavigationLib.php
@@ -334,11 +334,12 @@ class NavigationLib
 	 */
 	private function _getNavigationtPage($params)
 	{
+		$trimedval = trim($params[self::NAVIGATION_PAGE_PARAM]);
 		//
 		if ($params != null
 			&& is_array($params)
 			&& isset($params[self::NAVIGATION_PAGE_PARAM])
-			&& !empty(trim($params[self::NAVIGATION_PAGE_PARAM])))
+			&& !empty($trimedval))
 		{
 			$navigationPage = $params[self::NAVIGATION_PAGE_PARAM];
 		}
diff --git a/application/libraries/PhrasesLib.php b/application/libraries/PhrasesLib.php
index f895cf637..0c983c399 100644
--- a/application/libraries/PhrasesLib.php
+++ b/application/libraries/PhrasesLib.php
@@ -197,12 +197,13 @@ class PhrasesLib
 			{
 				$_phrase = $this->_phrases[$i]; // single phrase
 
+				$trimedval = trim($_phrase->text);
 				// If the single phrase match the given parameters and is not an empty string
 				if ($_phrase->category == $category
 					&& $_phrase->phrase == $phrase
 					&& $_phrase->orgeinheit_kurzbz == $orgeinheit_kurzbz
 					&& $_phrase->orgform_kurzbz == $orgform_kurzbz
-					&& (!empty(trim($_phrase->text))))
+					&& (!empty($trimedval)))
 				{
 					if (!is_array($parameters)) $parameters = array(); // if params is not an array
 
diff --git a/application/views/system/infocenter/infocenterData.php b/application/views/system/infocenter/infocenterData.php
index 9211fe29b..384486c0f 100755
--- a/application/views/system/infocenter/infocenterData.php
+++ b/application/views/system/infocenter/infocenterData.php
@@ -2,7 +2,7 @@
 
 	$APP = 'infocenter';
 	$NOTBEFORE = '2018-03-01 18:00:00';
-
+	
 	$filterWidgetArray = array(
 		'query' => '
 		SELECT
@@ -219,12 +219,13 @@
 		),
 		'formatRow' => function($datasetRaw) {
 
+			/* NOTE: Dont use $this here for PHP Version compatibility */
 			$datasetRaw->{'Details'} = sprintf(
 				'<a href="%s?person_id=%s&origin_page=%s&fhc_controller_id=%s">Details</a>',
 				site_url('system/infocenter/InfoCenter/showDetails'),
 				$datasetRaw->{'PersonId'},
-				$this->router->method,
-				$this->input->get('fhc_controller_id')
+				'index',
+				(isset($_GET['fhc_controller_id'])?$_GET['fhc_controller_id']:'')
 			);
 
 			if ($datasetRaw->{'SendDate'} == null)
diff --git a/application/views/system/infocenter/infocenterFreigegebenData.php b/application/views/system/infocenter/infocenterFreigegebenData.php
index 717a4dc1e..8a282ccda 100644
--- a/application/views/system/infocenter/infocenterFreigegebenData.php
+++ b/application/views/system/infocenter/infocenterFreigegebenData.php
@@ -153,12 +153,13 @@
 		),
 		'formatRow' => function($datasetRaw) {
 
+			/* NOTE: Dont use $this here for PHP Version compatibility */
 			$datasetRaw->{'Details'} = sprintf(
 				'<a href="%s?person_id=%s&origin_page=%s&fhc_controller_id=%s">Details</a>',
 				site_url('system/infocenter/InfoCenter/showDetails'),
 				$datasetRaw->{'PersonId'},
-				$this->router->method,
-				$this->input->get('fhc_controller_id')
+				'freigegeben',
+				(isset($_GET['fhc_controller_id'])?$_GET['fhc_controller_id']:'')
 			);
 
 			if ($datasetRaw->{'SendDate'} == null)