From f239d6c806d5cd2c006fbd40db8ed2a375a14f9a Mon Sep 17 00:00:00 2001
From: Ben Ramsey <ben@ramsey.dev>
Date: Thu, 26 Jun 2025 21:21:05 -0500
Subject: [PATCH] Default to microtime() instead of DateTimeImmutable

---
 src/Generator/UnixTimeGenerator.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Generator/UnixTimeGenerator.php b/src/Generator/UnixTimeGenerator.php
index 024ed51..a2615f1 100644
--- a/src/Generator/UnixTimeGenerator.php
+++ b/src/Generator/UnixTimeGenerator.php
@@ -15,7 +15,6 @@ declare(strict_types=1);
 namespace Ramsey\Uuid\Generator;
 
 use Brick\Math\BigInteger;
-use DateTimeImmutable;
 use DateTimeInterface;
 use Ramsey\Uuid\Type\Hexadecimal;
 
@@ -68,7 +67,12 @@ class UnixTimeGenerator implements TimeGeneratorInterface
      */
     public function generate($node = null, ?int $clockSeq = null, ?DateTimeInterface $dateTime = null): string
     {
-        $time = ($dateTime ?? new DateTimeImmutable('now'))->format('Uv');
+        if ($dateTime === null) {
+            $time = microtime(false);
+            $time = substr($time, 11) . substr($time, 2, 3);
+        } else {
+            $time = $dateTime->format('Uv');
+        }
 
         if ($time > self::$time || ($dateTime !== null && $time !== self::$time)) {
             $this->randomize($time);