[Uid] minor improvements

phpunit.xml.dist

@@ -78,6 +78,7 @@
                             <element key="5"><string>Symfony\Component\Cache\Traits</string></element>
                             <element key="6"><string>Symfony\Component\Console</string></element>
                             <element key="7"><string>Symfony\Component\HttpFoundation</string></element>
+                            <element key="8"><string>Symfony\Component\Uid</string></element>
                         </array>
                     </element>
                 </array>

src/Symfony/Component/Uid/AbstractUid.php

@@ -74,7 +74,13 @@ abstract class AbstractUid implements \JsonSerializable
      */
     public function toRfc4122(): string
     {
-        return uuid_unparse($this->toBinary());
+        // don't use uuid_unparse(), it's slower
+        $uuid = bin2hex($this->toBinary());
+        $uuid = substr_replace($uuid, '-', 8, 0);
+        $uuid = substr_replace($uuid, '-', 13, 0);
+        $uuid = substr_replace($uuid, '-', 18, 0);
+
+        return substr_replace($uuid, '-', 23, 0);
     }
 
     /**

src/Symfony/Component/Uid/Ulid.php

@@ -22,7 +22,7 @@ namespace Symfony\Component\Uid;
  */
 class Ulid extends AbstractUid
 {
-    private static $time = -1;
+    private static $time = '';
     private static $rand = [];
 
     public function __construct(string $ulid = null)

src/Symfony/Component/Uid/Uuid.php

@@ -41,7 +41,12 @@ class Uuid extends AbstractUid
         }
 
         if (16 === \strlen($uuid)) {
-            $uuid = uuid_unparse($uuid);
+            // don't use uuid_unparse(), it's slower
+            $uuid = bin2hex($uuid);
+            $uuid = substr_replace($uuid, '-', 8, 0);
+            $uuid = substr_replace($uuid, '-', 13, 0);
+            $uuid = substr_replace($uuid, '-', 18, 0);
+            $uuid = substr_replace($uuid, '-', 23, 0);
         } elseif (26 === \strlen($uuid) && Ulid::isValid($uuid)) {
             $uuid = (new Ulid($uuid))->toRfc4122();
         }

src/Symfony/Component/Uid/phpunit.xml.dist

@@ -27,4 +27,14 @@
             </exclude>
         </whitelist>
     </filter>
+
+    <listeners>
+        <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener">
+            <arguments>
+                <array>
+                    <element key="time-sensitive"><string>Symfony\Component\Uid</string></element>
+                </array>
+            </arguments>
+        </listener>
+    </listeners>
 </phpunit>