1 files changed, 62 insertions, 0 deletions
diff --git a/src/Monolog/DateTimeImmutable.php b/src/Monolog/DateTimeImmutable.php
new file mode 100644
index 0000000..45b80c7
--- /dev/null
+++ b/src/Monolog/DateTimeImmutable.php
@@ -0,0 +1,62 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog;
+
+/**
+ * Overrides default json encoding of date time objects
+ *
+ * @author Menno Holtkamp
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+class DateTimeImmutable extends \DateTimeImmutable implements \JsonSerializable
+{
+    private $useMicroseconds;
+
+    public function __construct($useMicroseconds, \DateTimeZone $timezone = null)
+    {
+        $this->useMicroseconds = $useMicroseconds;
+        $date = 'now';
+
+        if ($useMicroseconds) {
+            $timestamp = microtime(true);
+
+            // apply offset of the timezone as microtime() is always UTC
+            if ($timezone && $timezone->getName() !== 'UTC') {
+                $timestamp += (new \DateTime('now', $timezone))->getOffset();
+            }
+
+            // Circumvent DateTimeImmutable::createFromFormat() which always returns \DateTimeImmutable instead of `static`
+            // @link https://bugs.php.net/bug.php?id=60302
+            //
+            // So we create a DateTime but then format it so we
+            // can re-create one using the right class
+            $dt = self::createFromFormat('U.u', sprintf('%.6F', $timestamp));
+            $date = $dt->format('Y-m-d H:i:s.u');
+        }
+
+        parent::__construct($date, $timezone);
+    }
+
+    public function jsonSerialize(): string
+    {
+        if ($this->useMicroseconds) {
+            return $this->format('Y-m-d\TH:i:s.uP');
+        }
+
+        return $this->format('Y-m-d\TH:i:sP');
+    }
+
+    public function __toString(): string
+    {
+        return $this->jsonSerialize();
+    }
+}