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Doc Bug #80640 imagecreatetruecolor returns GDimage object instead of resource
Submitted: 2021-01-18 10:29 UTC Modified: 2021-05-24 22:39 UTC
From: petzold dot mx at gmail dot com Assigned: cmb (profile)
Status: Closed Package: GD related
PHP Version: 8.0Git-2021-01-18 (snap) OS: debian
Private report: No CVE-ID: None
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 [2021-01-18 10:29 UTC] petzold dot mx at gmail dot com
Description:
------------
---
From manual page: https://php.net/function.imagecreatetruecolor
---
returntype Change with php8 is not mentioned

imagecreatetruecolor returns an GdImage Object instead of a resource


Test script:
---------------
$image = imagecreatetruecolor(10,10);

if (!is_resource($image)) { 
die('Unable to generate image: not a resource'); 
}

Expected result:
----------------
true

Actual result:
--------------
false

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 [2021-01-18 11:48 UTC] cmb@php.net
-Package: *Programming Data Structures +Package: GD related
 [2021-01-18 11:48 UTC] cmb@php.net
Indeed, that is not documented in the manual proper; only the
migration guide notes the resource to object migration[1].

[1] <https://www.php.net/manual/en/migration80.incompatible.php#migration80.incompatible.resource2object>
 [2021-01-18 11:48 UTC] cmb@php.net
-Status: Open +Status: Verified
 [2021-05-24 22:39 UTC] cmb@php.net
-Status: Verified +Status: Closed -Assigned To: +Assigned To: cmb
 
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