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Doc Bug #73274 imagescale() with IMG_WEIGHTED4 always returns FALSE
Submitted: 2016-10-09 14:35 UTC Modified: 2016-10-09 16:50 UTC
From: cmb@php.net Assigned: cmb (profile)
Status: Closed Package: GD related
PHP Version: master-Git-2016-10-09 (Git) OS: *
Private report: No CVE-ID: None
 [2016-10-09 14:35 UTC] cmb@php.net
Description:
------------
When imagescale() is called with the $mode set to IMG_WEIGHTED4,
the operation always fails.

This has been reported against upstream libgd[1], but as PHP's
bundled libgd is affected as well, I'm forwarding the issue.

[1] <https://github.com/libgd/libgd/issues/328>


Test script:
---------------
<?php

$src = imagecreatetruecolor(100, 100);
imagefilledrectangle($src, 0,0, 99,99, 0xFFFFFF);
$dst = imagescale($src, 200, 200, IMG_WEIGHTED4);
var_dump($dst != NULL);


Expected result:
----------------
bool(true)

Actual result:
--------------
bool(false)

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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2016-10-09 14:35 UTC] cmb@php.net
-Assigned To: +Assigned To: cmb
 [2016-10-09 14:35 UTC] cmb@php.net
-Summary: imagescale() with IMG_WEIGHTED4 always returns NULL +Summary: imagescale() with IMG_WEIGHTED4 always returns FALSE
 [2016-10-09 16:32 UTC] cmb@php.net
Actually, IMG_WEIGHTED4 is not yet supported by imagescale(),
but by the other interpolation functions.

So this appears to be rather a documentation issue.
 [2016-10-09 16:49 UTC] cmb@php.net
-Type: Bug +Type: Documentation Problem
 [2016-10-09 16:50 UTC] cmb@php.net
Automatic comment from SVN on behalf of cmb
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=340412
Log: Fix #73274: imagescale() with IMG_WEIGHTED4 always returns FALSE
 [2016-10-09 16:50 UTC] cmb@php.net
-Status: Assigned +Status: Closed
 [2020-02-07 06:06 UTC] phpdocbot@php.net
Automatic comment on behalf of cmb
Revision: http://git.php.net/?p=doc/en.git;a=commit;h=edf411e2cd51cfbfaf79389b051e3ec74e68f706
Log: Fix #73274: imagescale() with IMG_WEIGHTED4 always returns FALSE
 
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