diff --git a/src/Compression/Gzip/GzipCompression.php b/src/Compression/Gzip/GzipCompression.php
index b8c9901..6845e7d 100644
--- a/src/Compression/Gzip/GzipCompression.php
+++ b/src/Compression/Gzip/GzipCompression.php
@@ -2,64 +2,63 @@
 
 namespace Mfonte\Base62x\Compression\Gzip;
 
-    use Mfonte\Base62x\Exception\CompressionException;
+use Mfonte\Base62x\Exception\CompressionException;
 
-    class GzipCompression
+class GzipCompression
+{
+    public static function encode($data, $encoding = null)
     {
-        public static function encode($data, $encoding = null)
-        {
-            if (!\function_exists('gzencode')) {
-                throw new CompressionException('gzip', 'Cannot use Gzip as compression algorithm: the current PHP installation does not support this module.');
-            }
-
-            $encoded = false;
-            switch ($encoding) {
-                case 'zlib':
-                    $encoded = \gzcompress($data, 9);
-                break;
-                case 'deflate':
-                    $encoded = \gzdeflate($data, 9);
-                break;
-                case 'gzip':
-                    $encoded = \gzencode($data, 9);
-                break;
-                break;
-                default:
-                    $encoded = \gzencode($data, 9);
-            }
+        if (!\function_exists('gzencode')) {
+            throw new CompressionException('gzip', 'Cannot use Gzip as compression algorithm: the current PHP installation does not support this module.');
+        }
 
-            if ($encoded === false) {
-                throw new CompressionException('gzip', 'The gz compression function returned a false state while compressing the input data.');
-            }
+        $encoded = false;
+        switch ($encoding) {
+            case 'zlib':
+                $encoded = \gzcompress($data, 9);
+            break;
+            case 'deflate':
+                $encoded = \gzdeflate($data, 9);
+            break;
+            case 'gzip':
+                $encoded = \gzencode($data, 9);
+            break;
+            default:
+                $encoded = \gzencode($data, 9);
+        }
 
-            return $encoded;
+        if ($encoded === false) {
+            throw new CompressionException('gzip', 'The gz compression function returned a false state while compressing the input data.');
         }
 
-        public static function decode($data, $encoding = null)
-        {
-            if (!\function_exists('gzdecode')) {
-                throw new CompressionException('gzip', 'Cannot use Gzip as compression algorithm: the current PHP installation does not support this module.');
-            }
+        return $encoded;
+    }
 
-            $decoded = false;
-            switch ($encoding) {
-                case 'zlib':
-                    $decoded = \gzuncompress($data);
-                break;
-                case 'deflate':
-                    $decoded = \gzinflate($data);
-                break;
-                case 'gzip':
-                    $decoded = \gzdecode($data);
-                break;
-                default:
-                    $decoded = \gzdecode($data);
-            }
+    public static function decode($data, $encoding = null)
+    {
+        if (!\function_exists('gzdecode')) {
+            throw new CompressionException('gzip', 'Cannot use Gzip as compression algorithm: the current PHP installation does not support this module.');
+        }
 
-            if ($decoded === false) {
-                throw new CompressionException('gzip', 'The gz decompression function returned a false state while uncompressing the input data.');
-            }
+        $decoded = false;
+        switch ($encoding) {
+            case 'zlib':
+                $decoded = \gzuncompress($data);
+            break;
+            case 'deflate':
+                $decoded = \gzinflate($data);
+            break;
+            case 'gzip':
+                $decoded = \gzdecode($data);
+            break;
+            default:
+                $decoded = \gzdecode($data);
+        }
 
-            return $decoded;
+        if ($decoded === false) {
+            throw new CompressionException('gzip', 'The gz decompression function returned a false state while uncompressing the input data.');
         }
+
+        return $decoded;
     }
+}
\ No newline at end of file
diff --git a/src/Encoding/Base62x.php b/src/Encoding/Base62x.php
index 3129a43..d2c1d3d 100644
--- a/src/Encoding/Base62x.php
+++ b/src/Encoding/Base62x.php
@@ -86,7 +86,7 @@ public static function encode($input, $ibase = null)
             // string
             $ascidx = [];
             $ascrlist = [];
-            $inputArr = \str_split($input);
+            $inputArr = \mb_str_split($input);
             $inputlen = \count($inputArr);
             //if(!isset($ascidx)){ $ascidx = array(); }
             //if(!isset($ascrlist)){ $ascrlist = array(); }
@@ -235,7 +235,7 @@ public static function decode($input, $obase = null)
             // string
             $ascidx = [];
             $ascrlist = [];
-            $inputArr = \str_split($input);
+            $inputArr = \mb_str_split($input);
             $inputlen = \count($inputArr);
             $setResult = self::setAscii($codetype, $inputArr, $ascidx, $ascmax, $asclist, $ascrlist);
             $asctype = $setResult['asctype'];
@@ -321,7 +321,7 @@ public static function xx2dec($inum, $ibase, $ridx)
                 $ridx_in['z'] = 61;
                 $ridx = $ridx_in;
             }
-            $iArr = \str_split($inum);
+            $iArr = \mb_str_split($inum);
             $iArr = \array_reverse($iArr);
             $arrLen = \count($iArr);
             $xnum = 0;
@@ -338,7 +338,7 @@ public static function xx2dec($inum, $ibase, $ridx)
                     \error_log(__FILE__.": xxdec found out of radix:$tmpi for base:$ibase.\n");
                     $tmpi = $ibase - 1;
                 }
-                $onum = $onum + $tmpi * \pow($ibase, ($i - $xnum));
+                $onum = $onum + $tmpi * $ibase ** ($i - $xnum);
                 //error_log("\t".__FILE__.": xx2dec ibase:$ibase i:$i c:".$iArr[$i]." tmpi:$tmpi onum:$onum xnum:$xnum");
             }
             if (\mb_strpos($onum, 'E') !== false) {
@@ -504,4 +504,4 @@ private static function _decodeByLength($tmpArr, $op, $m)
 
         return [$rtn = $op, $m];
     }
-}
+}
\ No newline at end of file
diff --git a/src/Encryption/Crypt.php b/src/Encryption/Crypt.php
index 85b1989..07a9b16 100644
--- a/src/Encryption/Crypt.php
+++ b/src/Encryption/Crypt.php
@@ -3,12 +3,13 @@
 namespace Mfonte\Base62x\Encryption;
 
 use Mfonte\Base62x\Exception\CryptException;
-use Mfonte\Base62x\Encryption\Cipher\Decrypt;
-use Mfonte\Base62x\Encryption\Cipher\Encrypt;
+use Mfonte\Base62x\Encryption\Cypher\Decrypt;
+use Mfonte\Base62x\Encryption\Cypher\Encrypt;
 
 class Crypt
 {
-    protected $method = 'aes-128-ctr'; // default cipher method if none supplied. see: http://php.net/openssl_get_cipher_methods for more.
+    // default cipher method if none supplied. see: http://php.net/openssl_get_cipher_methods for more.
+    protected $method = 'aes-128-ctr';
 
     private $key;
 
diff --git a/src/Encryption/Cypher/Bytes.php b/src/Encryption/Cypher/Bytes.php
index 8b32897..59cc827 100644
--- a/src/Encryption/Cypher/Bytes.php
+++ b/src/Encryption/Cypher/Bytes.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Mfonte\Base62x\Encryption\Cipher;
+namespace Mfonte\Base62x\Encryption\Cypher;
 
 class Bytes
 {
diff --git a/src/Encryption/Cypher/Decrypt.php b/src/Encryption/Cypher/Decrypt.php
index 0b68151..876ea4c 100644
--- a/src/Encryption/Cypher/Decrypt.php
+++ b/src/Encryption/Cypher/Decrypt.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Mfonte\Base62x\Encryption\Cipher;
+namespace Mfonte\Base62x\Encryption\Cypher;
 
 class Decrypt
 {
diff --git a/src/Encryption/Cypher/Encrypt.php b/src/Encryption/Cypher/Encrypt.php
index 570a25b..9c0d1d5 100644
--- a/src/Encryption/Cypher/Encrypt.php
+++ b/src/Encryption/Cypher/Encrypt.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Mfonte\Base62x\Encryption\Cipher;
+namespace Mfonte\Base62x\Encryption\Cypher;
 
 class Encrypt
 {