Bug #71316 [Opn]: libpng warning from imagecreatefromstring

From: Date: Thu, 21 Oct 2021 16:40:22 +0000
Subject: Bug #71316 [Opn]: libpng warning from imagecreatefromstring
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-237327@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=71316&edit=1

 ID:                 71316
 Updated by:         cmb@php.net
 Reported by:        humbads at alum dot mit dot edu
 Summary:            libpng warning from imagecreatefromstring
 Status:             Open
 Type:               Bug
 Package:            GD related
 Operating System:   FreeBSD 10.2
 PHP Version:        5.6.17
-Assigned To:        
+Assigned To:        cmb
 Block user comment: N
 Private report:     N

 New Comment:

The upstream issue has been fixed[1]; we have to backport that to
our bundled libgd.

[1] <https://github.com/libgd/libgd/commit/636100b9280a86e70d852d89251fc5492fce33f4>


Previous Comments:
------------------------------------------------------------------------
[2021-09-02 06:14:54] 2598059791 at qq dot com

$imgInfo = getimagesize($imageFile);
        $img_w = $imgInfo[0];
        $img_h = $imgInfo[1];

        switch ($imgInfo[2]){
            case 1:
                $bgImg =imagecreatefromgif($imageFile);  //gif
                break;
            case 2:
                $bgImg =imagecreatefromjpeg($imageFile); //jpg
                break;
            case 3:
                $bgImg = imagecreatefrompng($imageFile);  //png
                break;
            default:
                die("不支持的图片文件类型");
                exit;
        }
        $fontfile = ROOT_DIR.'/../../Resources/font/simhei.ttf';
        $fontfile = ROOT_DIR.'/font/simhei.ttf';
        if(file_exists($fontfile)){
            echo $imageFile."\n\n";
        }
        $text_color = imagecolorallocatealpha($bgImg,0,0,0,75);
        $pos_x = 30;
        $pos_y = $img_h - 20;
        imagettftext($bgImg, 12, 0, $pos_x, $pos_y, $text_color, $fontfile,
'审核药师：');
        $shenhe_img = imagecreatefrompng( ROOT_DIR.'/yaoshi/'.$shenhe );
        $shenheImgInfo = getimagesize( ROOT_DIR.'/yaoshi/'.$shenhe );
        $resize_h = 35;
        $resize_w = intval($shenheImgInfo[0]*$resize_h/$shenheImgInfo[1]);
        $pos_x = 110;
        $pos_y = $img_h-$resize_h-5;
        imagecopyresized($bgImg, $shenhe_img, $pos_x, $pos_y, 0, 0, $resize_w, $resize_h,
$shenheImgInfo[0], $shenheImgInfo[1]);

------------------------------------------------------------------------
[2021-07-23 09:19:23] cmb@php.net

> amazing for how many years random shit don't get fixed and no i
> don't care who and where is resposnible

Thanks for your valuable open-source contribution.

------------------------------------------------------------------------
[2020-11-04 19:50:14] rtrtrtrtrt at dfdfdfdf dot dfd

amazing for how many years random shit don't get fixed and no i don't care who and where
is resposnible

------------------------------------------------------------------------
[2020-11-04 19:47:03] humbads at alum dot mit dot edu

Here is a workaround for the "libpng warning: Interlace handling should be turned on when using
png_read_image" warnings emitted to stdout.

$command = "mogrify -interlace none *.png";
exec($command);

Call this prior to calling imagecreatefromstring.

------------------------------------------------------------------------
[2020-07-10 10:35:52] bugreports2 at gmail dot com

this just sucks wehn you verify that some file is really a png and get spewed by this messages (and
no fileinfo is useless given that many errors it makes over years)

libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: CRC error

------------------------------------------------------------------------


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    https://bugs.php.net/bug.php?id=71316


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