From 6854f87c384b2bcf549b9040413052ed67c3038b Mon Sep 17 00:00:00 2001
From: ET-NiK <kronstadtsky@bk.ru>
Date: Fri, 8 Aug 2014 18:43:02 +0400
Subject: Using ImagePNG in CAPTCHA helper Using ImagePNG function, if ImageJPG
 not exists

---
 system/helpers/captcha_helper.php   | 18 ++++++++++++++++--
 user_guide_src/source/changelog.rst |  1 +
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 74ab24ffb..36a53749f 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -216,8 +216,22 @@ if ( ! function_exists('create_captcha'))
 		//  Generate the image
 		// -----------------------------------
 		$img_url = rtrim($img_url, '/').'/';
-		$img_filename = $now.'.jpg';
-		ImageJPEG($im, $img_path.$img_filename);
+
+		if (function_exists('ImageJPEG'))
+		{
+			$img_filename = $now.'.jpg';
+			ImageJPEG($im, $img_path.$img_filename);
+		}
+		elseif (function_exists('ImagePNG'))
+		{
+			$img_filename = $now.'.png';
+			ImagePNG($im, $img_path.$img_filename);
+		}
+		else
+		{
+			return FALSE;
+		}
+
 		$img = '<img src="'.$img_url.$img_filename.'" style="width: '.$img_width.'; height: '.$img_height .'; border: 0;" alt=" " />';
 		ImageDestroy($im);
 
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 3215ae226..c37215d2d 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -137,6 +137,7 @@ Release Date: Not Released
       - Added *word_length* and *pool* options to allow customization of the generated word.
       - Added *colors* configuration to allow customization for the *background*, *border*, *text* and *grid* colors.
       - Added *filename* to the returned array elements.
+      - Using ImagePNG function, if ImageJPEG not exists.
 
    -  :doc:`Text Helper <helpers/text_helper>` changes include:
 
-- 
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