diff --git a/src/Meritoo/Common/Collection/Collection.php b/src/Meritoo/Common/Collection/Collection.php
index 7618640..75770c2 100644
--- a/src/Meritoo/Common/Collection/Collection.php
+++ b/src/Meritoo/Common/Collection/Collection.php
@@ -109,7 +109,7 @@ class Collection implements Countable, ArrayAccess, IteratorAggregate
      */
     public function add($element, $index = null)
     {
-        if ($index === null) {
+        if (null === $index) {
             $this->elements[] = $element;
         } else {
             $this->elements[$index] = $element;
@@ -216,7 +216,7 @@ class Collection implements Countable, ArrayAccess, IteratorAggregate
     {
         $index = Arrays::getIndexOf($this->elements, $element);
 
-        return $index !== null && $index !== false;
+        return null !== $index && false !== $index;
     }
 
     /**
diff --git a/src/Meritoo/Common/Type/Base/BaseType.php b/src/Meritoo/Common/Type/Base/BaseType.php
index 369f527..56f6a19 100644
--- a/src/Meritoo/Common/Type/Base/BaseType.php
+++ b/src/Meritoo/Common/Type/Base/BaseType.php
@@ -33,7 +33,7 @@ abstract class BaseType
      */
     public function getAll()
     {
-        if ($this->all === null) {
+        if (null === $this->all) {
             $this->all = Reflection::getConstants($this);
         }
 
diff --git a/src/Meritoo/Common/Utilities/Arrays.php b/src/Meritoo/Common/Utilities/Arrays.php
index 5773805..fa9937f 100644
--- a/src/Meritoo/Common/Utilities/Arrays.php
+++ b/src/Meritoo/Common/Utilities/Arrays.php
@@ -415,7 +415,7 @@ class Arrays
                      * var autoGeneratedVariable = new Array(...);autoGeneratedVariable[0] = new Array(...);
                      * autoGeneratedVariable[1] = new Array(...);
                      */
-                    if ($counter === 1) {
+                    if (1 === $counter) {
                         $effect .= "\n";
                     }
 
@@ -758,7 +758,7 @@ class Arrays
         foreach ($exploded as $item) {
             $exploded2 = explode($valuesKeysSeparator, $item);
 
-            if (count($exploded2) == 2) {
+            if (2 == count($exploded2)) {
                 $key = trim($exploded2[0]);
                 $value = trim($exploded2[1]);
 
@@ -1124,7 +1124,7 @@ class Arrays
         if (!empty($array)) {
             $childPosition = 1;
 
-            if ($startPosition !== null) {
+            if (null !== $startPosition) {
                 $array[$keyName] = $startPosition;
             }
 
@@ -1316,7 +1316,7 @@ class Arrays
              *
              * If one of the above is true, not all elements of given array are empty
              */
-            if ((!is_array($element) && $strictNull && $element !== null) || !empty($element)) {
+            if ((!is_array($element) && $strictNull && null !== $element) || !empty($element)) {
                 return false;
             }
         }
@@ -1353,7 +1353,7 @@ class Arrays
          * Values should be compared only and both arrays are one-dimensional?
          * Let's find difference by using simple function
          */
-        if ($valuesOnly && self::getDimensionsCount($array1) == 1 && self::getDimensionsCount($array2) == 1) {
+        if ($valuesOnly && 1 == self::getDimensionsCount($array1) && 1 == self::getDimensionsCount($array2)) {
             return array_diff($array1, $array2);
         }
 
@@ -1381,7 +1381,7 @@ class Arrays
                     }
                 }
 
-                if ($difference !== null) {
+                if (null !== $difference) {
                     $effect[] = $difference;
                 }
             } else {
@@ -1472,7 +1472,7 @@ class Arrays
              * Start index not provided?
              * Let's look for the first index / key of given array
              */
-            if ($startIndex === null) {
+            if (null === $startIndex) {
                 $startIndex = self::getFirstKey($array);
             }
 
@@ -1617,7 +1617,7 @@ class Arrays
          * Index of element or of element's key is unknown?
          * Probably the element does not exist in given array, so... nothing to do
          */
-        if ($elementKey === null || $indexOfKey === null) {
+        if (null === $elementKey || null === $indexOfKey) {
             return null;
         }
 
diff --git a/src/Meritoo/Common/Utilities/Composer.php b/src/Meritoo/Common/Utilities/Composer.php
index 3e33e3a..86ff4da 100644
--- a/src/Meritoo/Common/Utilities/Composer.php
+++ b/src/Meritoo/Common/Utilities/Composer.php
@@ -59,7 +59,7 @@ class Composer
          * Unknown data from the composer.json file or there is no node with given name?
          * Nothing to do
          */
-        if ($data === null || !isset($data->{$nodeName})) {
+        if (null === $data || !isset($data->{$nodeName})) {
             return null;
         }
 
diff --git a/src/Meritoo/Common/Utilities/Date.php b/src/Meritoo/Common/Utilities/Date.php
index 9a0f500..c4196b3 100644
--- a/src/Meritoo/Common/Utilities/Date.php
+++ b/src/Meritoo/Common/Utilities/Date.php
@@ -129,10 +129,10 @@ class Date
                     $dateStart = new DateTime();
                     $dateEnd = new DateTime();
 
-                    if ($period == DatePeriod::LAST_YEAR || $period == DatePeriod::NEXT_YEAR) {
+                    if (DatePeriod::LAST_YEAR == $period || DatePeriod::NEXT_YEAR == $period) {
                         $yearDifference = 1;
 
-                        if ($period == DatePeriod::LAST_YEAR) {
+                        if (DatePeriod::LAST_YEAR == $period) {
                             $yearDifference *= -1;
                         }
 
@@ -148,7 +148,7 @@ class Date
                     break;
             }
 
-            if ($dateStart !== null && $dateEnd !== null) {
+            if (null !== $dateStart && null !== $dateEnd) {
                 $dateStart->setTime(0, 0, 0);
                 $dateEnd->setTime(23, 59, 59);
 
@@ -311,7 +311,7 @@ class Date
 
         $encoding = mb_detect_encoding($name);
 
-        if ($encoding === false) {
+        if (false === $encoding) {
             $name = mb_convert_encoding($name, 'UTF-8', 'ISO-8859-2');
         }
 
@@ -378,46 +378,46 @@ class Date
             self::DATE_DIFFERENCE_UNIT_MINUTES,
         ];
 
-        if ($differenceUnit === null || $differenceUnit == self::DATE_DIFFERENCE_UNIT_YEARS) {
+        if (null === $differenceUnit || self::DATE_DIFFERENCE_UNIT_YEARS == $differenceUnit) {
             $diff = $dateEnd->diff($dateStart);
 
             /*
              * Difference between dates in years should be returned only?
              */
-            if ($differenceUnit == self::DATE_DIFFERENCE_UNIT_YEARS) {
+            if (self::DATE_DIFFERENCE_UNIT_YEARS == $differenceUnit) {
                 return $diff->y;
             }
 
             $difference[self::DATE_DIFFERENCE_UNIT_YEARS] = $diff->y;
         }
 
-        if ($differenceUnit === null || $differenceUnit == self::DATE_DIFFERENCE_UNIT_MONTHS) {
+        if (null === $differenceUnit || self::DATE_DIFFERENCE_UNIT_MONTHS == $differenceUnit) {
             $diff = $dateEnd->diff($dateStart);
 
             /*
              * Difference between dates in months should be returned only?
              */
-            if ($differenceUnit == self::DATE_DIFFERENCE_UNIT_MONTHS) {
+            if (self::DATE_DIFFERENCE_UNIT_MONTHS == $differenceUnit) {
                 return $diff->m;
             }
 
             $difference[self::DATE_DIFFERENCE_UNIT_MONTHS] = $diff->m;
         }
 
-        if ($differenceUnit === null || in_array($differenceUnit, $relatedUnits)) {
+        if (null === $differenceUnit || in_array($differenceUnit, $relatedUnits)) {
             $days = (int)floor($dateDiff / $daySeconds);
 
             /*
              * Difference between dates in days should be returned only?
              */
-            if ($differenceUnit == self::DATE_DIFFERENCE_UNIT_DAYS) {
+            if (self::DATE_DIFFERENCE_UNIT_DAYS == $differenceUnit) {
                 return $days;
             }
 
             /*
              * All units should be returned?
              */
-            if ($differenceUnit === null) {
+            if (null === $differenceUnit) {
                 $difference[self::DATE_DIFFERENCE_UNIT_DAYS] = $days;
             }
 
@@ -427,20 +427,20 @@ class Date
             $daysInSeconds = $days * $daySeconds;
         }
 
-        if ($differenceUnit === null || in_array($differenceUnit, $relatedUnits)) {
+        if (null === $differenceUnit || in_array($differenceUnit, $relatedUnits)) {
             $hours = (int)floor(($dateDiff - $daysInSeconds) / $hourSeconds);
 
             /*
              * Difference between dates in hours should be returned only?
              */
-            if ($differenceUnit == self::DATE_DIFFERENCE_UNIT_HOURS) {
+            if (self::DATE_DIFFERENCE_UNIT_HOURS == $differenceUnit) {
                 return $hours;
             }
 
             /*
              * All units should be returned?
              */
-            if ($differenceUnit === null) {
+            if (null === $differenceUnit) {
                 $difference[self::DATE_DIFFERENCE_UNIT_HOURS] = $hours;
             }
 
@@ -450,13 +450,13 @@ class Date
             $hoursInSeconds = $hours * $hourSeconds;
         }
 
-        if ($differenceUnit === null || $differenceUnit == self::DATE_DIFFERENCE_UNIT_MINUTES) {
+        if (null === $differenceUnit || self::DATE_DIFFERENCE_UNIT_MINUTES == $differenceUnit) {
             $minutes = (int)floor(($dateDiff - $daysInSeconds - $hoursInSeconds) / 60);
 
             /*
              * Difference between dates in minutes should be returned only?
              */
-            if ($differenceUnit == self::DATE_DIFFERENCE_UNIT_MINUTES) {
+            if (self::DATE_DIFFERENCE_UNIT_MINUTES == $differenceUnit) {
                 return $minutes;
             }
 
@@ -524,7 +524,7 @@ class Date
      */
     public static function getRandomDate(DateTime $startDate = null, $start = 1, $end = 100, $intervalTemplate = 'P%sD')
     {
-        if ($startDate === null) {
+        if (null === $startDate) {
             $startDate = new DateTime();
         }
 
@@ -590,7 +590,7 @@ class Date
                  */
                 $dateFromFormat = DateTime::createFromFormat($dateFormat, $value);
 
-                if ($dateFromFormat === false) {
+                if (false === $dateFromFormat) {
                     /*
                      * Nothing to do more, because:
                      * a) instance of the DateTime was created
diff --git a/src/Meritoo/Common/Utilities/DatePeriod.php b/src/Meritoo/Common/Utilities/DatePeriod.php
index ac704f3..96e5973 100644
--- a/src/Meritoo/Common/Utilities/DatePeriod.php
+++ b/src/Meritoo/Common/Utilities/DatePeriod.php
@@ -140,7 +140,7 @@ class DatePeriod
         /*
          * Unknown date or format is invalid?
          */
-        if ($date === null || !Date::isValidDateFormat($format)) {
+        if (null === $date || !Date::isValidDateFormat($format)) {
             return '';
         }
 
diff --git a/src/Meritoo/Common/Utilities/Miscellaneous.php b/src/Meritoo/Common/Utilities/Miscellaneous.php
index 015684d..655f119 100644
--- a/src/Meritoo/Common/Utilities/Miscellaneous.php
+++ b/src/Meritoo/Common/Utilities/Miscellaneous.php
@@ -65,7 +65,7 @@ class Miscellaneous
 
         if (!empty($directoryContent)) {
             foreach ($directoryContent as $fileName) {
-                if ($fileName != '.' && $fileName != '..') {
+                if ('.' != $fileName && '..' != $fileName) {
                     $content = null;
 
                     if (!empty($startFileName) && !$startFileFound) {
@@ -80,7 +80,7 @@ class Miscellaneous
                         $content = self::getDirectoryContent($directoryPath . $fileName, true, $maxFilesCount - $count);
                     }
 
-                    if ($content !== null) {
+                    if (null !== $content) {
                         $files[$fileName] = $content;
 
                         if (!empty($maxFilesCount)) {
@@ -365,7 +365,7 @@ class Miscellaneous
          * Oops, cannot instantiate converter
          * Nothing to do
          */
-        if ($converter === null) {
+        if (null === $converter) {
             return '';
         }
 
@@ -460,7 +460,7 @@ class Miscellaneous
          * Value to find is neither a string nor an array OR it's an empty string?
          * Nothing to do
          */
-        if ((!$searchIsString && !$searchIsArray) || ($searchIsString && strlen($search) == 0)) {
+        if ((!$searchIsString && !$searchIsArray) || ($searchIsString && 0 == strlen($search))) {
             return $effect;
         }
 
@@ -612,7 +612,7 @@ class Miscellaneous
             $effect = mb_substr($text, 0, $maxLength, 'utf-8');
             $lastSpacePosition = mb_strrpos($effect, ' ', 'utf-8');
 
-            if ($lastSpacePosition !== false) {
+            if (false !== $lastSpacePosition) {
                 $effect = mb_substr($effect, 0, $lastSpacePosition, 'utf-8');
             }
 
@@ -730,7 +730,7 @@ class Miscellaneous
         }
 
         foreach (scandir($directoryPath) as $item) {
-            if ($item == '.' || $item == '..') {
+            if ('.' == $item || '..' == $item) {
                 continue;
             }
 
@@ -776,7 +776,7 @@ class Miscellaneous
         foreach ($members as $key => $value) {
             $value = mb_strtolower($value);
 
-            if ($key == 0) {
+            if (0 == $key) {
                 $effect .= self::lowercaseFirst($value);
             } else {
                 $effect .= self::uppercaseFirst($value);
@@ -812,7 +812,7 @@ class Miscellaneous
 
         if ($restLowercase) {
             $effect = mb_strtolower($effect);
-        } elseif ($restLowercase === false) {
+        } elseif (false === $restLowercase) {
             $effect = mb_strtoupper($effect);
         }
 
@@ -850,7 +850,7 @@ class Miscellaneous
 
         if ($restLowercase) {
             $effect = mb_strtolower($effect);
-        } elseif ($restLowercase === false) {
+        } elseif (false === $restLowercase) {
             $effect = mb_strtoupper($effect);
         }
 
@@ -1153,7 +1153,7 @@ class Miscellaneous
     {
         $value = filter_input($globalSourceType, $variableName);
 
-        if ($value === null) {
+        if (null === $value) {
             $globalSource = null;
 
             switch ($globalSourceType) {
@@ -1178,7 +1178,7 @@ class Miscellaneous
                     break;
             }
 
-            if ($globalSource !== null && isset($globalSource[$variableName])) {
+            if (null !== $globalSource && isset($globalSource[$variableName])) {
                 $value = $globalSource[$variableName];
 
                 if (!ini_get('magic_quotes_gpc')) {
@@ -1232,7 +1232,7 @@ class Miscellaneous
             /*
              * First line is only HTTP status and is unneeded so skip it
              */
-            if ($i === 0) {
+            if (0 === $i) {
                 continue;
             }
 
@@ -1242,7 +1242,7 @@ class Miscellaneous
                 /*
                  * If the header is a "set-cookie" let's save it to "cookies" array
                  */
-                if ($key === 'Set-Cookie') {
+                if ('Set-Cookie' === $key) {
                     $cookieParameters = explode(';', $value);
 
                     $name = '';
@@ -1260,7 +1260,7 @@ class Miscellaneous
                          * First parameter will be always a cookie name and it's value. It is not needed to run
                          * further actions for them, so save the values and move to next parameter.
                          */
-                        if ($j === 0) {
+                        if (0 === $j) {
                             $name = trim($param[0]);
                             $value = trim($param[1]);
                             continue;
@@ -1416,7 +1416,7 @@ class Miscellaneous
         if ($asHexadecimal) {
             $hexadecimal = dechex($colorComponent);
 
-            if (strlen($hexadecimal) == 1) {
+            if (1 == strlen($hexadecimal)) {
                 return sprintf('0%s', $hexadecimal, $hexadecimal);
             }
 
diff --git a/src/Meritoo/Common/Utilities/QueryBuilderUtility.php b/src/Meritoo/Common/Utilities/QueryBuilderUtility.php
index 3b2fd88..476fe4c 100644
--- a/src/Meritoo/Common/Utilities/QueryBuilderUtility.php
+++ b/src/Meritoo/Common/Utilities/QueryBuilderUtility.php
@@ -108,7 +108,7 @@ class QueryBuilderUtility
                 $compareOperator = '=';
 
                 if (is_array($value) && !empty($value)) {
-                    if (count($value) == 2) {
+                    if (2 == count($value)) {
                         $compareOperator = $value[1];
                     }
 
@@ -117,7 +117,7 @@ class QueryBuilderUtility
 
                 $predicate = sprintf('%s.%s %s :%s', $alias, $column, $compareOperator, $column);
 
-                if ($value === null) {
+                if (null === $value) {
                     $predicate = $queryBuilder->expr()->isNull(sprintf('%s.%s', $alias, $column));
                     unset($criteria[$column]);
                 } else {
diff --git a/src/Meritoo/Common/Utilities/Reflection.php b/src/Meritoo/Common/Utilities/Reflection.php
index 3bc4998..473ac63 100644
--- a/src/Meritoo/Common/Utilities/Reflection.php
+++ b/src/Meritoo/Common/Utilities/Reflection.php
@@ -201,7 +201,7 @@ class Reflection
              * Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
              * 2016-11-07
              */
-            if ($object !== null) {
+            if (null !== $object) {
                 unset($exploded[0]);
 
                 $property = implode('.', $exploded);
@@ -246,7 +246,7 @@ class Reflection
                     }
                 }
 
-                if (!$valueFound && $reflectionProperty !== null) {
+                if (!$valueFound && null !== $reflectionProperty) {
                     /*
                      * Oops, we have got exception.
                      *
@@ -285,7 +285,7 @@ class Reflection
         foreach ($objects as $entity) {
             $value = self::getPropertyValue($entity, $property, $force);
 
-            if ($value !== null) {
+            if (null !== $value) {
                 $values[] = $value;
             }
         }
@@ -345,7 +345,7 @@ class Reflection
         if ($withoutNamespace) {
             $classOnly = Miscellaneous::getLastElementOfString($name, '\\');
 
-            if ($classOnly !== null) {
+            if (null !== $classOnly) {
                 $name = $classOnly;
             }
 
@@ -427,7 +427,7 @@ class Reflection
         $className = self::getClassName($source);
         $reflection = new ReflectionClass($className);
 
-        if ($filter === null) {
+        if (null === $filter) {
             $filter = ReflectionProperty::IS_PRIVATE
                 + ReflectionProperty::IS_PROTECTED
                 + ReflectionProperty::IS_PUBLIC
@@ -477,7 +477,7 @@ class Reflection
         /*
          * Oops, cannot resolve class
          */
-        if ($className === null) {
+        if (null === $className) {
             throw new CannotResolveClassNameException($class);
         }
 
@@ -603,7 +603,7 @@ class Reflection
         if (!$uses && $verifyParents) {
             $parentClassName = self::getParentClassName($className);
 
-            if ($parentClassName !== null) {
+            if (null !== $parentClassName) {
                 return self::usesTrait($parentClassName, $trait, true);
             }
         }
@@ -624,7 +624,7 @@ class Reflection
         $reflection = new ReflectionClass($className);
         $parentClass = $reflection->getParentClass();
 
-        if ($parentClass === null || $parentClass === false) {
+        if (null === $parentClass || false === $parentClass) {
             return null;
         }
 
diff --git a/src/Meritoo/Common/Utilities/Regex.php b/src/Meritoo/Common/Utilities/Regex.php
index 123cba2..f46eff4 100644
--- a/src/Meritoo/Common/Utilities/Regex.php
+++ b/src/Meritoo/Common/Utilities/Regex.php
@@ -84,7 +84,7 @@ class Regex
             $taxid = preg_replace('/[\s-]/', '', $taxidString);
             $sum = 0;
 
-            if (strlen($taxid) == 10 && is_numeric($taxid)) {
+            if (10 == strlen($taxid) && is_numeric($taxid)) {
                 for ($x = 0; $x <= 8; ++$x) {
                     $sum += $taxid[$x] * $weights[$x];
                 }
@@ -185,9 +185,9 @@ class Regex
                         $pattern = '|' . $filterExpression . '|';
                         $matchesCount = preg_match($pattern, $value, $matches);
 
-                        $remove = $matchesCount == 0;
+                        $remove = 0 == $matchesCount;
                     } else {
-                        if ($value == '') {
+                        if ('' == $value) {
                             $value = '\'\'';
                         } elseif (is_string($value)) {
                             $value = '\'' . $value . '\'';
@@ -431,7 +431,7 @@ class Regex
     public static function startsWith($string, $beginning)
     {
         if (!empty($string) && !empty($beginning)) {
-            if (strlen($beginning) == 1 && !self::isLetterOrDigit($beginning)) {
+            if (1 == strlen($beginning) && !self::isLetterOrDigit($beginning)) {
                 $beginning = '\\' . $beginning;
             }
 
@@ -452,7 +452,7 @@ class Regex
      */
     public static function endsWith($string, $ending)
     {
-        if (strlen($ending) == 1 && !self::isLetterOrDigit($ending)) {
+        if (1 == strlen($ending) && !self::isLetterOrDigit($ending)) {
             $ending = '\\' . $ending;
         }
 
@@ -537,7 +537,7 @@ class Regex
      */
     public static function contains($haystack, $needle)
     {
-        if (strlen($needle) == 1 && !self::isLetterOrDigit($needle)) {
+        if (1 == strlen($needle) && !self::isLetterOrDigit($needle)) {
             $needle = '\\' . $needle;
         }
 
@@ -653,7 +653,7 @@ class Regex
         }
 
         $modulo = $sum % 11;
-        $numberControl = ($modulo == 10) ? 0 : $modulo;
+        $numberControl = (10 == $modulo) ? 0 : $modulo;
 
         return $numberControl == $nip[9];
     }
@@ -698,10 +698,10 @@ class Regex
         $color = Miscellaneous::replace($color, '/#/', '');
         $length = strlen($color);
 
-        if ($length === 3) {
+        if (3 === $length) {
             $color = Miscellaneous::replace($color, '/(.)(.)(.)/', '$1$1$2$2$3$3');
         } else {
-            if ($length !== 6) {
+            if (6 !== $length) {
                 if ($throwException) {
                     throw new IncorrectColorHexLengthException($color);
                 }
diff --git a/src/Meritoo/Common/Utilities/Repository.php b/src/Meritoo/Common/Utilities/Repository.php
index b0246ba..533e64c 100644
--- a/src/Meritoo/Common/Utilities/Repository.php
+++ b/src/Meritoo/Common/Utilities/Repository.php
@@ -31,14 +31,14 @@ class Repository
     {
         $position = self::getExtremePosition($items, $asLast);
 
-        if ($position === null && $force) {
+        if (null === $position && $force) {
             $position = 0;
         }
 
-        if ($position !== null && !empty($items)) {
+        if (null !== $position && !empty($items)) {
             foreach ($items as $item) {
                 if (method_exists($item, 'getPosition')) {
-                    if ($item->getPosition() === null) {
+                    if (null === $item->getPosition()) {
                         if ($asLast) {
                             ++$position;
                         } else {
diff --git a/src/Meritoo/Common/Utilities/Xml.php b/src/Meritoo/Common/Utilities/Xml.php
index 60882d4..a048259 100644
--- a/src/Meritoo/Common/Utilities/Xml.php
+++ b/src/Meritoo/Common/Utilities/Xml.php
@@ -40,7 +40,7 @@ class Xml
         $query = $path->query('/*/*');
         $nodesCount = $query->length;
 
-        if ($nodesCount == 0) {
+        if (0 == $nodesCount) {
             return $element1;
         }