Add our own DateTime implementation to provide nicer JSON output, fixes #736

src/Monolog/DateTimeImmutable.php

@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * 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)
+    {
+        $date = null;
+        if ($useMicroseconds) {
+            $timestamp = microtime(true);
+            $microseconds = sprintf("%06d", ($timestamp - floor($timestamp)) * 1000000);
+            $date = date('Y-m-d H:i:s.' . $microseconds, $timestamp);
+        }
+        parent::__construct($date, $timezone);
+
+        $this->useMicroseconds = $useMicroseconds;
+    }
+
+    /**
+     * @return string
+     */
+    public function jsonSerialize()
+    {
+        if ($this->useMicroseconds) {
+            return $this->format('Y-m-d\TH:i:s.uP');
+        }
+
+        return $this->format('Y-m-d\TH:i:sP');
+    }
+}