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