package and depencies

vendor/symfony/mime/Encoder/QpContentEncoder.php

@@ -46,15 +46,10 @@ final class QpContentEncoder implements ContentEncoderInterface
         // transform =0D=0A to CRLF
         $string = str_replace(["\t=0D=0A", ' =0D=0A', '=0D=0A'], ["=09\r\n", "=20\r\n", "\r\n"], $string);
 
-        switch (\ord(substr($string, -1))) {
-            case 0x09:
-                $string = substr_replace($string, '=09', -1);
-                break;
-            case 0x20:
-                $string = substr_replace($string, '=20', -1);
-                break;
-        }
-
-        return $string;
+        return match (\ord(substr($string, -1))) {
+            0x09 => substr_replace($string, '=09', -1),
+            0x20 => substr_replace($string, '=20', -1),
+            default => $string,
+        };
     }
 }

vendor/symfony/mime/Encoder/QpEncoder.php

@@ -76,7 +76,7 @@ class QpEncoder implements EncoderInterface
         255 => '=FF',
     ];
 
-    private static $safeMapShare = [];
+    private static array $safeMapShare = [];
 
     /**
      * A map of non-encoded ascii characters.
@@ -85,7 +85,7 @@ class QpEncoder implements EncoderInterface
      *
      * @internal
      */
-    protected $safeMap = [];
+    protected array $safeMap = [];
 
     public function __construct()
     {
@@ -106,8 +106,6 @@ class QpEncoder implements EncoderInterface
     }
 
     /**
-     * {@inheritdoc}
-     *
      * Takes an unencoded string and produces a QP encoded string from it.
      *
      * QP encoded strings have a maximum line length of 76 characters.
@@ -184,12 +182,11 @@ class QpEncoder implements EncoderInterface
     private function standardize(string $string): string
     {
         $string = str_replace(["\t=0D=0A", ' =0D=0A', '=0D=0A'], ["=09\r\n", "=20\r\n", "\r\n"], $string);
-        switch ($end = \ord(substr($string, -1))) {
-            case 0x09:
-            case 0x20:
-                $string = substr_replace($string, self::QP_MAP[$end], -1);
-        }
 
-        return $string;
+        return match ($end = \ord(substr($string, -1))) {
+            0x09,
+            0x20 => substr_replace($string, self::QP_MAP[$end], -1),
+            default => $string,
+        };
     }
 }