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Make it clear what GD uses instead of resources #6342

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Make it clear what GD uses instead of resources #6342

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5 changes: 3 additions & 2 deletions UPGRADING
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Expand Up @@ -311,9 +311,10 @@ PHP 8.0 UPGRADE NOTES
warning.

- GD:
. The GD extension now uses objects as the underlying data structure for
. The GD extension now uses a GdImage object as the underlying data structure for
images, rather than resources. These objects are completely opaque, i.e.
they don't have any methods.
they don't have any methods. Return value checks using is_resource() should be
replaced with checks for `false`.
. The deprecated function image2wbmp() has been removed.
RFC: https://wiki.php.net/rfc/image2wbmp
. The deprecated functions png2wbmp() and jpeg2wbmp() have been removed.
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