diff --git a/src/MD_STD.php b/src/MD_STD.php
index 1aec7da..1e6b91e 100644
--- a/src/MD_STD.php
+++ b/src/MD_STD.php
@@ -383,7 +383,7 @@ final class MD_STD {
         ];
 
         if (isset($_GET['navlang']) and in_array($_GET['navlang'], $allowed_langs, true)) {
-            if (!(setcookie('__Host-lang', $_GET['navlang'], $cookie_options))) {
+            if (!setcookie('__Host-lang', $_GET['navlang'], $cookie_options)) {
                 throw new Exception("Failed to set language");
             }
             $lang = $_GET['navlang'];
@@ -393,7 +393,7 @@ final class MD_STD {
         }
         else {
             $lang = self::lang_getfrombrowser($allowed_langs, $default_lang, "", false);
-            if (!(setcookie('__Host-lang', $lang, $cookie_options))) {
+            if (!setcookie('__Host-lang', $lang, $cookie_options)) {
                 throw new Exception("Failed to set language");
             }
         }
@@ -521,7 +521,7 @@ final class MD_STD {
      */
     public static function human_filesize(int $bytes, int $decimals = 2):string {
 
-        $size = ['B','kB','MB','GB','TB','PB','EB','ZB','YB'];
+        $size = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
         $factor = \floor((\strlen((string)$bytes) - 1) / 3);
         return \sprintf("%.{$decimals}f", $bytes / \pow(1024, $factor)) . $size[$factor];
 
diff --git a/src/MD_STD_IN.php b/src/MD_STD_IN.php
index 1497d12..6e53a9f 100644
--- a/src/MD_STD_IN.php
+++ b/src/MD_STD_IN.php
@@ -16,7 +16,7 @@ final class MD_STD_IN {
      *
      * @return integer
      */
-    public static function sanitize_id($input):int {
+    public static function sanitize_id(mixed $input):int {
 
         $input = \filter_var($input, \FILTER_VALIDATE_INT, [
                 'options' => [
@@ -26,7 +26,7 @@ final class MD_STD_IN {
             ]
         );
 
-        if (!($input)) {
+        if (!$input) {
             throw new MDpageParameterNotNumericException("Value is not numeric.");
         }
 
@@ -41,7 +41,7 @@ final class MD_STD_IN {
      *
      * @return integer
      */
-    public static function sanitize_id_or_zero($input):int {
+    public static function sanitize_id_or_zero(mixed $input):int {
 
         if ($input === "") {
             return 0;
@@ -71,7 +71,7 @@ final class MD_STD_IN {
      *
      * @return string
      */
-    public static function sanitize_text($input):string {
+    public static function sanitize_text(mixed $input):string {
 
         $output = \filter_var($input,
             FILTER_SANITIZE_STRING,
@@ -95,14 +95,14 @@ final class MD_STD_IN {
      *
      * @return string
      */
-    public static function sanitize_rgb_color($input):string {
+    public static function sanitize_rgb_color(mixed $input):string {
 
         $output = \filter_var($input,
             FILTER_SANITIZE_STRING,
             FILTER_FLAG_NO_ENCODE_QUOTES);
 
         if ($output === false
-            || ((preg_match('/^[a-zA-Z0-9]{3}$/', $output)) === false && (preg_match('/^[a-zA-Z0-9]{6}$/', $output)) === false)
+            || (preg_match('/^[a-zA-Z0-9]{3}$/', $output) === false && preg_match('/^[a-zA-Z0-9]{6}$/', $output) === false)
         ) {
             throw new MDInvalidColorCode("Invalid color code provided: " . $output);
         }
@@ -175,7 +175,7 @@ final class MD_STD_IN {
      *
      * @return string
      */
-    public static function sanitize_url($input):string {
+    public static function sanitize_url(mixed $input):string {
 
         if ($input === "") {
             return "";
@@ -197,7 +197,7 @@ final class MD_STD_IN {
      *
      * @return string
      */
-    public static function sanitize_email($input):string {
+    public static function sanitize_email(mixed $input):string {
 
         if ($input === "") {
             return "";
diff --git a/src/MD_STD_SEC.php b/src/MD_STD_SEC.php
index 7a3d8df..9b6af10 100644
--- a/src/MD_STD_SEC.php
+++ b/src/MD_STD_SEC.php
@@ -8,6 +8,12 @@ declare(strict_types = 1);
  * Gathers wrappers for handling basic security operations.
  */
 final class MD_STD_SEC {
+
+    const BRUTE_FORCE_DELAY_DEFAULT = 2000; // 2000 microseconds = 2 milliseconds
+    const BRUTE_FORCE_DELAY_MULTIPLIER_COMMON   = 1.08;
+    const BRUTE_FORCE_DELAY_MULTIPLIER_PER_USER = 1.8;
+    const BRUTE_FORCE_DELAY_MULTIPLIER_PER_IP = 4;
+
     /**
      * Function for retrieving the anti-csrf token or generating it if need be.
      *
@@ -45,11 +51,6 @@ final class MD_STD_SEC {
 
     }
 
-    const BRUTE_FORCE_DELAY_DEFAULT = 2000; // 2000 microseconds = 2 milliseconds
-    const BRUTE_FORCE_DELAY_MULTIPLIER_COMMON   = 1.08;
-    const BRUTE_FORCE_DELAY_MULTIPLIER_PER_USER = 1.8;
-    const BRUTE_FORCE_DELAY_MULTIPLIER_PER_IP = 4;
-
     /**
      * Prevent brute force attacks by delaying the login .
      *