From 62818d102db4b57d9d1739e30fd33a20a1920fcb Mon Sep 17 00:00:00 2001
From: Daniil Gentili <daniil.gentili.dg@gmail.com>
Date: Wed, 9 Aug 2017 14:23:44 +0200
Subject: [PATCH] fix

---
 src/danog/MadelineProto/Logger.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/danog/MadelineProto/Logger.php b/src/danog/MadelineProto/Logger.php
index 1a115b12..2af1bd40 100644
--- a/src/danog/MadelineProto/Logger.php
+++ b/src/danog/MadelineProto/Logger.php
@@ -126,7 +126,7 @@ class Logger
         self::$colors[self::ERROR] = implode(';', [self::foreground['white'], self::set['bold'], self::background['red']]);
         self::$colors[self::FATAL_ERROR] = implode(';', [self::foreground['red'], self::set['bold'], self::background['light_gray']]);
         try {
-            self::$isatty = defined('STDOUT') && posix_isatty(STDOUT);
+            self::$isatty = defined('STDOUT') && function_exists('posix_isatty') && posix_isatty(STDOUT);
         } catch (\danog\MadelineProto\Exception $e) {
         }
     }