From e90fff64845d67d0caca50eca3473b1af2133141 Mon Sep 17 00:00:00 2001
From: likman <likman@users.noreply.github.com>
Date: Tue, 5 Apr 2022 15:27:01 +0300
Subject: [PATCH] Update TextToImage.php

Case insensitive file extension
---
 src/TextToImage.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/TextToImage.php b/src/TextToImage.php
index 0df948f..97f881a 100644
--- a/src/TextToImage.php
+++ b/src/TextToImage.php
@@ -167,7 +167,7 @@ public function render(string $save_as = null, string $ext = null): string
      */
     private function getExtension(string $filename): string
     {
-        return (($position = strrpos($filename,'.')) !== false) ? substr($filename,$position + 1) : '';
+        return (($position = strrpos($filename,'.')) !== false) ? mb_strtolower(substr($filename,$position + 1)) : '';
     }
 
     /**
@@ -215,4 +215,4 @@ private function write($image, Text $text, int $x, int $y, array $color)
             imagestring($image, $font_size, $x, $y, $label, imagecolorallocatealpha($image, ...$color));
         }
     }
-}
\ No newline at end of file
+}