Use classes with readonly properties more widely#1592
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cpeel
approved these changes
Jul 1, 2026
srjfoo
approved these changes
Jul 8, 2026
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This is more intended to start discussion rather than necessarily to be merged as-is.
As you can see, PHP 8.0's "property constructor promotion" is more of a win in simpler classes that are mostly "data transfer objects", and it saves less boilerplate when there's an inheritance hierarchy, or when some properties have to be explicitly declared.
However, I do like the opportunity to sprinkle more 'readonly' on properties (which says only the constructor can assign to a property, and it can only do it once). Avoiding mutable state makes it a lot easier to reason about classes.
After a couple of fixes, it passes all the smoke tests (and PHPstan is happy).
It's deployed at https://www.pgdp.org/~bfoley/c.branch/more-dto and I did some cursory poking around with the proofreading interface, project search, wordcheck, stats etc.