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PHP RFC: Deprecate png2wbmp() and jpeg2wbmp()
- Version: 0.9
- Date: 2016-10-15
- Author: Christoph M. Becker, cmb@php.net
- Status: Draft
- First Published at: http://wiki.php.net/rfc/deprecate-png-jpeg-2wbmp
Introduction
png2wbmp()
and jpeg2wbmp()
are the only direct image format conversion functions available in ext/gd what makes them rather special, particularly as libgd doesn't offer any such functions 1). Furthermore WBMP 2) has been invented to support WAP 3), which appears to be mostly obsolete nowadays.
Proposal
Therefore I propose to deprecate the png2wbmp()
and jpeg2wbmp()
functions as of PHP 7.2, and to remove them as of PHP 8.0.
The main benefit in doing so would be easier maintainance of the libgd bindings (_php_image_convert() alone accounts for rougly 200 lines). An additional benefit would be to have a slightly cleaner and less confusing API (Why are there no other conversion functions? Why don't these functions follow the general “image” prefix rule?)
Backward Incompatible Changes
Obviously, code still using png2wbmp() or jpeg2wbmp() would break. However, fallback functions could easily implemented in userland.
Proposed PHP Version(s)
- Deprecation as of next PHP 7.x
- Removal
List the proposed PHP versions that the feature will be included in. Use relative versions such as “next PHP 7.x” or “next PHP 7.x.y”.
RFC Impact
To SAPIs
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To Existing Extensions
Will existing extensions be affected?
To Opcache
It is necessary to develop RFC's with opcache in mind, since opcache is a core extension distributed with PHP.
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New Constants
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php.ini Defaults
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- hardcoded default values
- php.ini-development values
- php.ini-production values
Open Issues
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Unaffected PHP Functionality
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This helps avoid any ambiguity, shows that you have thought deeply about the RFC's impact, and helps reduces mail list noise.
Future Scope
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Proposed Voting Choices
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Patches and Tests
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Implementation
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- the version(s) it was merged to
- a link to the git commit(s)
- a link to the PHP manual entry for the feature
References
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Rejected Features
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