symfony · fabpot · Mar 8, 2019 · Mar 8, 2019
diff --git a/src/Symfony/Component/Mime/Header/Headers.php b/src/Symfony/Component/Mime/Header/Headers.php
@@ -210,13 +210,23 @@ public static function isUniqueHeader(string $name): bool
    public function toString(): string
    {
        $string = '';
+        foreach ($this->toArray() as $str) {
+            $string .= $str."\r\n";
+        }
+
+        return $string;
+    }
+
+    public function toArray(): array
+    {
+        $arr = [];
        foreach ($this->getAll() as $header) {
            if ('' !== $header->getBodyAsString()) {
-                $string .= $header->toString()."\r\n";
+                $arr[] = $header->toString();
            }
        }

-        return $string;
+        return $arr;
    }

    /**

diff --git a/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php b/src/Symfony/Component/Mime/Tests/Header/HeadersTest.php
@@ -231,4 +231,15 @@ public function testHeadersWithoutBodiesAreNotDisplayed()
        $headers->addTextHeader('Zip', '');
        $this->assertEquals("Foo: bar\r\n", $headers->toString());
    }
+
+    public function testToArray()
+    {
+        $headers = new Headers();
+        $headers->addIdHeader('Message-ID', 'some@id');
+        $headers->addTextHeader('Foo', str_repeat('a', 60).pack('C', 0x8F));
+        $this->assertEquals([
+            'Message-ID: <some@id>',
+            "Foo: =?utf-8?Q?aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa?=\r\n =?utf-8?Q?aaaa?=",
+        ], $headers->toArray());
+    }
 }