Deprecation
Deprecation, or making a feature obsolete, is the state of a feature which is still available, but not recommended anymore. The next stage of life for the feature is the removal, usually in a major release.
<?php
1 ? 2 : 3 ? 4 : 5; // deprecated in PHP 7.4, removed in PHP 8.0
(1 ? 2 : 3) ? 4 : 5; // ok
?>
See Also
- Deprecated Code: The Warning You Keep Ignoring Will Eventually Break Everything
- Software Engineering at Google - Deprecation