--- title: [RFC] Primary Constructors | daily.dev description: A PHP internals mailing list thread discussing the proposed Primary Constructors RFC for PHP. The RFC proposes a new syntax allowing class properties to be... canonical: https://daily.dev/posts/rfc-primary-constructors-blyqvpmum twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: [RFC] Primary Constructors | daily.dev og:description: A PHP internals mailing list thread discussing the proposed Primary Constructors RFC for PHP. The RFC proposes a new syntax allowing class properties to be... og:url: https://daily.dev/posts/rfc-primary-constructors-blyqvpmum og:image: https://api.daily.dev/og/posts/BLYQVpmUM.png og:image:alt: [RFC] Primary Constructors og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # [RFC] Primary Constructors **[externals.io](https://daily.dev/sources/externals)** · 80 min read · 0 upvotes · 0 comments ## Summary A PHP internals mailing list thread discussing the proposed Primary Constructors RFC for PHP. The RFC proposes a new syntax allowing class properties to be declared directly in the class signature (e.g., `class Money(public readonly int $amount) {}`), saving a few lines over traditional constructor promotion. Key debate centers on whether primary constructors should support a body for initialization/validation logic. Critic Nick Sdot argues the feature is too limited without body support, especially for readonly classes where property hooks don't work, and warns against shipping another half-finished PHP feature. RFC author Rob Landers defends the scoped design, citing data that 30-40% of constructors are empty and 61-71% of Laravel/Symfony classes could benefit, while suggesting body support could come in a follow-up RFC. Rowan Tommins takes the opposite view, arguing that full parity with regular constructors would cause endless style debates. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [\[RFC\] Primary Constructors](https://daily.dev/posts/rfc-primary-constructors-wiuaokyan) · externals.io · 0 upvotes · 0 comments - [\[RFC\] Primary Constructors](https://daily.dev/posts/rfc-primary-constructors-ykd5kv1oa) · externals.io · 0 upvotes · 0 comments - [\[RFC\] Primary Constructors](https://daily.dev/posts/rfc-primary-constructors-0izd2c7kn) · externals.io · 0 upvotes · 0 comments - [\[RFC\] Primary Constructors](https://daily.dev/posts/rfc-primary-constructors-68gpapvfc) · externals.io · 0 upvotes · 0 comments - [\[RFC\] Primary Constructors](https://daily.dev/posts/rfc-primary-constructors-h4bivd5ey) · externals.io · 0 upvotes · 0 comments --- Tags: [#general-programming](https://daily.dev/tags/general-programming), [#php](https://daily.dev/tags/php) [View this post on daily.dev](https://daily.dev/posts/rfc-primary-constructors-blyqvpmum) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"[RFC] Primary Constructors","url":"https://daily.dev/posts/rfc-primary-constructors-blyqvpmum","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/rfc-primary-constructors-blyqvpmum"},"datePublished":"2026-07-01T11:45:30.405Z","dateModified":"2026-07-01T11:45:53.690Z","description":"A PHP internals mailing list thread discussing the proposed Primary Constructors RFC for PHP. 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