From b788f0a456d7c71d1270f8cf0288e8bb71fe8fcc Mon Sep 17 00:00:00 2001
From: Joas Schilling <coding@schilljs.com>
Date: Mon, 23 Jul 2018 16:30:38 +0200
Subject: [PATCH] Make sure error_log() always receives a string

Signed-off-by: Joas Schilling <coding@schilljs.com>
---
 lib/private/Log/File.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/private/Log/File.php b/lib/private/Log/File.php
index 597cb54e40..c881c6dd9d 100644
--- a/lib/private/Log/File.php
+++ b/lib/private/Log/File.php
@@ -145,6 +145,9 @@ class File implements IWriter, IFileBased {
 			error_log($entry);
 		}
 		if (php_sapi_name() === 'cli-server') {
+			if (!\is_string($message)) {
+				$message = json_encode($message);
+			}
 			error_log($message, 4);
 		}
 	}