diff --git a/exceptions/MDCoordinateOutOfRange.php b/exceptions/MDCoordinateOutOfRange.php
index b59ea97..4b218dd 100644
--- a/exceptions/MDCoordinateOutOfRange.php
+++ b/exceptions/MDCoordinateOutOfRange.php
@@ -13,8 +13,7 @@ final class MDCoordinateOutOfRange extends MDExpectedException {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'Parameter: <b>' . $this->getMessage() . '</b> is not a valid, numeric values.';
-        return $errorMsg;
+        return 'Parameter: <b>' . $this->getMessage() . '</b> is not a valid, numeric values.';
 
     }
 }
diff --git a/exceptions/MDJailSecurityOptionNotSetException.php b/exceptions/MDJailSecurityOptionNotSetException.php
index 4b33d37..251d7b0 100644
--- a/exceptions/MDJailSecurityOptionNotSetException.php
+++ b/exceptions/MDJailSecurityOptionNotSetException.php
@@ -12,8 +12,7 @@ final class MDJailSecurityOptionNotSetException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'A security option of MD_JAIL has not been set: <b>' . $this->getMessage() . '</b>).';
-        return $errorMsg;
+        return 'A security option of MD_JAIL has not been set: <b>' . $this->getMessage() . '</b>).';
 
     }
 }
diff --git a/exceptions/MDJsonEncodingFailedException.php b/exceptions/MDJsonEncodingFailedException.php
index 48af23c..25a4acb 100644
--- a/exceptions/MDJsonEncodingFailedException.php
+++ b/exceptions/MDJsonEncodingFailedException.php
@@ -12,8 +12,7 @@ final class MDJsonEncodingFailedException extends Exception {
      */
     public function errorMessage() {
         //error message
-        $errorMsg = 'Failed to encode JSON data.';
-        return $errorMsg;
+        return 'Failed to encode JSON data.';
 
     }
 }
diff --git a/src/MDFormatter.php b/src/MDFormatter.php
index 404680c..736c236 100644
--- a/src/MDFormatter.php
+++ b/src/MDFormatter.php
@@ -132,12 +132,10 @@ final class MDFormatter {
      */
     public static function formatMarkdownCodeBlock(string $content, string $language = ''):string {
 
-        $output = '```' . $language . '
+        return '```' . $language . '
 ' . $content . '
 ```' . PHP_EOL;
 
-        return $output;
-
     }
 
     /**
diff --git a/src/MD_STD.php b/src/MD_STD.php
index a12caab..425ea68 100644
--- a/src/MD_STD.php
+++ b/src/MD_STD.php
@@ -386,11 +386,12 @@ final class MD_STD {
         } while($running > 0);
 
         $res = [];
-        foreach($urls as $i => $url) {
+        $keys = \array_keys($urls);
+        foreach($keys as $i){
             $res[$i] = \curl_multi_getcontent($curl_array[$i]) ?: '';
         }
 
-        foreach($urls as $i => $url){
+        foreach($keys as $i){
             \curl_multi_remove_handle($mh, $curl_array[$i]);
         }
         \curl_multi_close($mh);
@@ -579,8 +580,7 @@ final class MD_STD {
      */
     public static function openssl_random_pseudo_bytes(int $length):string {
 
-        $output = \openssl_random_pseudo_bytes($length);
-        return $output;
+        return \openssl_random_pseudo_bytes($length);
 
     }
 
@@ -750,8 +750,7 @@ final class MD_STD {
      */
     public static function string_to_color_code(string $str):string {
 
-        $code = \substr(\dechex(\crc32($str)), 0, 6);
-        return $code;
+        return \substr(\dechex(\crc32($str)), 0, 6);
 
     }